SPECIFIER’S GUIDE - CALMARK

SPECIFIER’S
GUIDE

CALMARK™ RETAINERS

Overview of Calmark TABLE OF CONTENTS

Overview...................................................................Page 2, 3 Channel-Lok Products
Product Selection Guide ..........................................Page 4
Requirements ..............................................................Page 5 Series 227 & 228 ................................................Page 58, 59

Conduction Cooling Products Retainers

Conduction Cooled Assemblies .......................Page 6, 7 Series 125/126 & 165/166 .....................................Page 60
Conduction Cooled Keying .. ..............................Page 8, 9 Series NW125/NW126 & NW165/NW166........Page 61

Card-Lok Products Card Guides

Series 223 & 224 ................................................ Page 10, 11 Series 115-287 ..........................................................Page 62
Series 225............................................................. Page 12, 13 Series 120 & C120.....................................................Page 63
Series E225 .......................................................... Page 14, 15
Series L225 .......................................................... Page 16, 17 Extractors, Nylon
Series 226............................................................. Page 18, 19
Series 230............................................................. Page 20, 21 Series 101 to 108...............................................Page 64, 65
Series 231............................................................. Page 22, 23
Series 235 ............................................................ Page 24, 25 Extractors, Metal
Series 236 ............................................................ Page 26, 27
Series 240............................................................. Page 28, 29 Series 107.............................................................Page 66, 67
Series 245............................................................. Page 30, 31 Series 109....................................................................Page 68
Series 250 ............................................................ Page 32, 33
Series 255............................................................. Page 34, 35 References
Series 260 ............................................................ Page 36, 37
Series L260 .......................................................... Page 38, 39 Technical Applications ...........................................Page 69
Series LE260 ....................................................... Page 40, 41 Clamping Force Data - Card-Loks.......................Page 70
Series 261 ............................................................ Page 42, 43 Thermal Resistance - Card-Loks..........................Page 71
Series 263 ............................................................ Page 44, 45 Mounting & Installation for Card-Loks..............Page 72
Series 264 ............................................................ Page 46, 47 Theoretical Discussion of Card-Loks
Series 265 ............................................................ Page 48, 49
Series 266 ............................................................ Page 50, 51 and Inserter Extractors ...................................Page 73
Series 267............................................................. Page 52, 53 Material & Finishes ..................................................Page 74
Series 280 ............................................................ Page 54, 55 Technical Reference Data .............................. Page 75-83
Series 281 ............................................................ Page 56, 57 DSCC Cross Reference ............................................Page 84
Glossary ......................................................................Page 85

www.calmark.com • 800-854-7086 2

Overview

Calmark, the home of the Card-Lok, designs and manufactures Water Segment – a global leader in providing innovative products and
rugged printed circuit board guides, conduction frame assemblies and systems used world wide in the movement, treatment, storage and
extractors for use in non-benign - airborne, shipborne, and rugged land enjoyment of water.
transportation - environments. Equipment Protection Segment – is a leader in the global enclosures
Today, Pentair markets the Calmark brand of products along with Birtcher™ market, designing and manufacturing standard, modified, custom, thermal
globally and Schroff® in the Americas, while complimenting these standard enclosures that house and protect sensitive electronics and electrical
product brands with its own customer-specific enclosure capabilities. components.
Pentair brands are market specific (see below) and are complimented by
Pentair is a manufacturer of standard, modified standard and customer the groups’thermal division which supports all markets.
specific enclosure systems: capabilities range from backplane design, to
NEBS enclosures, to outdoor (Telecordia compliant) aluminum enclosures,
to high volume stamped chassis, and systems integration.

Pentair, Inc. (PNR-NYSE) is a highly successful, diversified corporation
consisting of two core business goups.

EQUIPMENT PROTECTION WATER SEGMENT
SEGMENT

ELECTRICAL, INDUSTRIAL THERMAL ELECTRONICS
& COMMERCIAL MARKETS MARKETS
MARKETS

3 www.calmark.com • 800-854-7086

Overview

www.calmark.com • 800-854-7086 4

Product Selection Guide

Card-Lok Actuation Profile Width (nominal) x Profile Height Length Approximate Recommended DSCC DSCC
Relaxed Height (max) Expanded (min) Clamping Torque Setting CID
Product 3 or Screw (min) Force2 N(lbs) N-cm (in-lbs) 84103
Series 5 pc. Screw 5.72 (.225) x 6.86 (.270) 8.26 (.325) 71.12 (2.80) tbd limited 89064 59590
Screw 5.33 (.210) x 7.24 (.285) 8.64 (.340) 71.12 (2.80) tbd limited 84103
223 5 Screw 5.72 (.225) x 6.86 (.270) 8.26 (.325) 54.61 (2.15) 489 (110) 68 (6) 89064 59789
224 5 Lever 5.72 (.225) x 6.86 (.270) 8.26 (.325) 71.12 (2.80) 489 (110) 68 (6) 84103 59590
225 3 Screw 5.72 (.225) x 6.86 (.270) 8.26 (.325) 54.61 (2.15) 533 (120) 59789
E225 3 Screw 5.72 (.225) x 6.86 (.270) 8.26 (.325) 121.92 (4.80) 800 (180) N/A 89024
L225 3 Screw 5.59 (.220) x 5.72 (.225) 6.99 (.275) 54.61 (2.15) 489 (110) 68 (6) 59590
226 5 Screw 5.59 (.220) x 5.72 (.225) 6.99 (.275) 121.92 (4.80) 800 (180) 68 (6) 59590
230 3 Screw 5.84 (.230) x 7.32 (.288) 8.64 (.340) 71.12 (2.80) 445 (100) 68 (6) 59590
231 5 Screw 5.84 (.230) x 7.32 (.288) 8.64 (.340) 147.32 (5.80) 800 (180) 68 (6) 59590
235 3 Screw 6.10 (.240) x 4.57 (.180) 5.59 (.220) 54.61 (2.15) 489 (110) 68 (6) 59789
236 5 Screw 6.60 (.260) x 6.86 (.270) 8.26 (.325) 54.61 (2.15) 622 (140) 68 (6) 59789
240 3 Screw 9.53 (.375) x 9.78 (.385) 11.94 (.470) 63.50 (2.50) 1111 (250) 113 (10) 59789
245 3 Screw 12.70 (.500) x 11.68 (.460) 15.24 (.600) 54.61 (2.15) 1778 (400) 227 (20) 59789
250 3 Screw 6.35 (.250) x 6.26 (.270) 8.26 (.325) 54.61 (2.15) 1778 (400) 351 (31)
255 3 Lever 6.35 (.250) x 6.26 (.270) 8.26 (.325) 54.61 (2.15) 667 (150) 68 (6) 59789
260 5 Lever 6.35 (.250) x 6.26 (.270) 8.26 (.325) 54.61 (2.15) 556 (125) 68 (6)
261 3 Screw 6.35 (.250) x 6.26 (.270) 8.26 (.325) 54.61 (2.15) 556 (125) N/A
L260 5 Screw 6.35 (.250) x 7.44 (.293) 8.89 (.350) 54.61 (2.15) 1778 (400) N/A
LE260 5 Screw 6.35 (.250) x 7.44 (.293) 8.89 (.350) 54.61 (2.15) 667 (150) 68 (6)
263 5 Screw 5.72 (.225) x 5.84 (.230) 7.37 (.290) 54.61 (2.15) 1556 (350) 68 (6)
264 3 Screw 5.72 (.225) x 5.84 (.230) 7.37 (.290) 54.61 (2.15) 600 (135) 68 (6)
265 5 Screw 6.35 (.250) x 5.00 (.197) 5.99 (.236) 54.61 (2.15) 1556 (350) 68 (6)
266 3 Screw 9.27 (.365) x 9.65 (.380) 11.68 (.460) 60.96 (2.40) 3334 (750) 68 (6)
267 5 9.27 (.365) x 9.65 (.380) 11.68 (.460) 60.96 (2.40) 1245 (280) 227 (20)
280 5 227 (20)
281 3

Channel-Lok Board Thickness Length1 Approximate Recommended
(min) Clamping Torque Setting
Product 3 or Actuation Width x Height (max) 1.14 (.045) to 2.62 (.103) Force2N (lbs) N-cm (in-lbs)
Series 5 pc. 1.14 (.045) to 2.62 (.103) 76.20 (3.00) 489 (110) 68 (6)
101.6 (4.00) 801 (180) 68 (6)
227 3 Screw 12.57 (.495) to 8.89 (.350)
228 5 Screw 12.57 (.495) to 8.89 (.350)

Retainers & Card Guides
Product Series Material Conductive Application Board Thickness Length1 (min) UL rating
Sheet Metal 1.6 (.063) & 2.4 (.094) 31.75 (1.25) to 311.15 (12.25) N/A
125/126 CR Yes 31.75 (1.25) to 311.15 (12.25)
31.75 (1.25) to 311.15 (12.25) N/A
165/166 BeCu Yes Sheet Metal 1.6 (.063) & 2.4 (.094) 31.75 (1.25) to 311.15 (12.25) N/A
N/A
NW125/NW126 CR Yes Cold Wall N/A 101.60(4.00),152.40(6.00),177.8(7.00),215.90(8.50),241.30(9.50)
101.60(4.00),152.40(6.00),177.8(7.00),215.90(8.50),241.30(9.50) V-2 (V-0 available)
NW165/NW166 BeCu Yes Cold Wall N/A V-2 (V-0 available)

120 Nylon No Sheet Metal 1.6 (.063) & 2.4 (.094)

C120 Polycarbonate Yes Sheet Metal 1.6 (.063) & 2.4 (.094)

Nylon Extractors & Inserter-Extractors Metal Extractors & Inserter-Extractors
Product Material Function4 Mechanical Board Thickness UL Rating Product Material Function4 Mechanical Board Thickness
Series Advantage Series Advantage
V-0
107 Glass-filled Nylon I & E 4.5:1 1.6 (.063) & V-0 107-35 Al I & E 5.5:1 1.6 (.063), 2.4 (.094) &
2.4 (.094) V-2 3.2 (.125)
(V-0 available)
107-10 Glass-filled Nylon I & E 3.3:1 1.6 (.063) & 107-50 Al I & E 4.5:1 1.6 (.063), 2.4 (.094) &
2.4 (.094) 3.2 (.125)

107-20 Glass-filled Nylon I, E & L 4.5:1 1.6 (.063) & 107-51 Al I & E 3.3:1 1.6 (.063), 2.4 (.094) &
2.4 (.094) 3.2 (.125)

107-30 Glass-filled Nylon I & E 5.5:1 1.6 (.063) V-0 107-55 Al I & E 8.0:1 1.6 (.063), 2.4 (.094) &
3.2 (.125)
107-40-3 Glass-filled Nylon I&E 4.5:1 1.6 (.063) & V-0
107-70 I, E & L 4.5:1 2.4 to 3.2 (.094 to .125) V-0 (Inserter- 107-73 Al I, E & L 4.2:1 1.6 (.063), 2.4 (.094) &
Glass-filled Nylon 1.6 (.063), Extractor) 3.2 (.125)
Latch - Nylon 2.4 (0.94) & V-2 (Latch)
3.2 (.125) 107-75 Al I, E & L 7.0:1 1.6 (.063), 2.4 (.094) &
3.2 (.125)

109 Al or CR E 4.5:1 1.6 (.063), 2.4 (.094) &
3.2 (.125)5

1-Other assembly lengths available upon request 2-Clamping forces based on Chemical Film Option – Other finishes and options will yield different results
3-101 available in 1.6 (.063) only 4-Function: E=Extract I=Insert L=Latch or Lock 5-Units are metic (inch)

5 www.calmark.com • 800-854-7086

Requirements

Finish & Plating

The Calmark product line offers a wide variety of standard finishes for products. Most of the components are made of aluminum or stainless steel.
The standard finishes are:
For Aluminum, standard finishes include: For BeCu, standard finishes include:
• Chemical Film per Mil-DTL-5541 Type 1 (non-RoHS) Class 1A or 3, Gold • Tin Plate per Mil-T-10727 Type I, Bright
• Chemical Film per Mil-DTL-5541 Class 3, Type I, Gold for Shafted Products • Nickel Plate per QQ-N-290 Class I, Grade F
• Chemical Film per Mil-DTL-5541 Class 3, Type II, Clear • Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
• Black Anodize per Mil-A-8625 Type II, Class 2 • Zinc Plate per ASTM-B633 Type III (Clear), SC1
• Hard Black Anodize per Mil-A-8625 Type III, Class 2 For Nylon card guides and extractors:
• Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
For Stainless steel, standard finish is: • Color coding is available for Natural/White card guides and extractors
• Standard colors are BLK and Natural; other colors avalailable upon
• Passivation per AMS 2700 request.

RoHS - Restriction of Hazardous Substances
The Calmark product line offers several product configurations to meet the requirements of the European Directive 2002/95/EC for Restriction of Hazardous
Substances. This European Directive affects primarily the aluminum components that are finished with a gold chemical film process. This process uses a
hexavalent chromium (Cr+6). An option for clear chemical film process using a trivalent chromium (Cr+3) has been added for those needing to meet this
requirement. Contact one of our applications engineers for more details regarding the RoHS requirements of specific items.

DFARS 252.225-7014 & Alt 1. Preference for Domestic Specialty Metals Clause
Calmark products can support the needs of Prime Contractors and Subcontractors supplying product to the DOD, particularly the Preference for Domestic
Specialty Metals Clause. This clause is applicable to DOD Prime Contract Awards exceeding the simplified acquistion threshold, of products, components and
assemblies for use in Aircraft, Missile and Space Systems, Ships, Tank and Automotive Items, Weapon Systems or Ammunition. For the Calmark product line,
this affects the hardware, components and materials that are made of stainless steel. At the time of this writing, all COTS items which include all part numbers
configurable in this catalog are exempt from the Preference for Domestic Specialty Metals Clause for Prime Contract Awards after October 25, 2007. Fastener
DNAD waivers are also available for Prime Contract Awards between April 10, 2007, and July 26, 2008. There are many other exemptions available.

We recognize that each of our customers has a different method for handling this requirement, so we have implemented a process that we feel will handle the
great majority of our customers’requirements. Because at this time, the Class Deviations are not retro-active, in order to best respond to your needs, we do
require that all quotations and purchase orders note this requirement along with the Prime Contract Number. We do charge for a signed DFARS 252.225-7014
& Alt 1. Statement Sheet that must go along with your order. For those customers that can use the COTS exemption, we offer free of charge documents that
you can download from our website. The Product Sheets will indicate from the Statement Sheet which statement applies for your product of interest. If these
documents meet your needs, please indicate this in your quotation or P.O. Of course, for those customers that need a signed Statement Sheet, we can also
accomodate this requirement at an additional fee.

DSCC - Defense Supply Center - Columbus

Calmark also provides as a standard offering products that meet many of the specifications defined by Defense Supply Center – Columbus.
Calmark has incorporated the DSCC part numbers as a standard product offering to get the proper specification requirements by the addition of a“CM-”
prefix to the DSCC part configuration for our internal part number system. The DSCC part number will be part of the description.
All part numbers defined in the DSCC specifications are considered COTS items for Calmark.

Design Flexibility – Common Modifications
The Calmark product line offers an extremely broad range of configurations, not all of which are detailed in this catalog. Calmark is set up to handle these
requests. Contact one of our Applications Engineers and a unique part number will be assigned for you for a product that meets your specification. Some of
the modifications available include:

• 7 and 9 or more wedge segments • Different lever lengths than those offered in the catalog
• Lengths outside of our standard catalog product offering • Different hardware than standard offering including screw threads, thread-
• Relocation or addition of mounting holes
• Tapped holes other than the standard catalog product offering locking mechanism and bonded washers
• Screw head activation different from M2.5 and 3/32 hex socket • Secured wedges
• Specific individual wedge dimensions different from the • Ejection feature simillar to E225 may be implemented on other

catalog offering Series profiles
• Replacement of split washers with Belleville washers • Modification of extractors
• Materials with different alloys from the catalog offering • Hot stamp of plastic parts to your requirements
• Different finish from those offered in the catalog • Silkscreen per your requirements
• Add chamfers

Our applications engineers can help you specify a cost effective design that will work for your application. The catalog offers the configurations that
meet most applications, but if you don’t see what you’re looking for in the catalog, please call us. Odds are, we’ve already done something very similar.

Warranty
Pentair Technical Products’Warranty is guaranteed from defects for 1 (one) year after shipment.

www.calmark.com • 800-854-7086 6

Conduction Cooled Assemblies

Conduction Cooled Assemblies consist of Custom Conduction Cooled Frames
a conduction cooled frame, backing plate
or backing strips, extractors and wedge
clamps. They are designed for circuit boards
requiring cooling in severe environments
where convection cooling is not practical.
The assembly also provides needed
structural support of the plug-in module
during extremely high shock and vibration
applications. Optional configuration for
compliance to IEEE 1101.2 and VITA 30.1.
Calmark offers a standard design that
takes the guesswork out of the perimeter
of the assembly. The component area can
be customized to match your board and
application.

FEATURES
• Conduction frames available in 3U
or 6U, VME or cPCI based designs
• Can accommodate ccPMC or XMCs
• Extractors provide ample force to
disengage board connectors Wedge Clamp Conduction Cooled Frame
Free Connector (P)
• Available in Black Anodize, Chem Coding Keys
film or Electroless Nickel plating for
excellent corrosion resistance Plug-in
• 6061-T651 aluminum provides Module
high thermal conductivity as well as Wedge Clamp
lightweight support
• Locking Helicoils secure board Extractor

fasteners in extreme vibration
environments
• High performance five piece wedge
clamp provides high clamping force
with even pressure distribution for
low thermal resistance
• Frame and backing plate are each
machined from a solid piece to
assure high heat transfer and
structural integrity
• Custom silkscreen available
Backing Plate

ACCESSORY
• Code Keys prevent VME64x

Conduction Cooled Assemblies
from inadvertent insertion into the
wrong slot

89090687

3U and 6U designs are avalable with compliance to IEEE 1101.2 and VITA 30.1 specifications.
Conduction Cooled PMC modules can be incorporated per VITA 20.

7 www.calmark.com • 800-854-7086

Conduction Cooled Assemblies

142.37 [5.605]
113369..1843 [[55..356005]]
133.60 [5.260]
115.06 [4.530]
76.96 [3.030]
VARIABLE RIB "XXX"
38.86 [1.530]
4.19 [.165]
0 .000
3.56 [.140]

052..39.0280[[0..211152]]
120.0° 14.61 [.575]

44.45 [1.750]

4.57 [.180] 88.90 [3.500]
233.35 [9.187] 133.35 [5.250]
BOARD DIMENSION

2.67 [.105] 177.80 [7.000]

6.48 [.255] 216.87 [8.538]
222.25 [8.750]
BOAFKROEDERPWOUEDTGELOK160.0C0C[A6.2F9R9A.2]M36E [6.00] M2.5x0.45 225.17 [8.865]
BOARD DIMENSIONS
89091138

Part Number Code G B16 L Part Number Code Example:
Conduction Cooled Assemblies CCB3VPMCBP16L
Conduction Cooled Assembly 3U VME designed with ccPMC mounting, black
CC B 3 V XXX anodized, with 1.6mm backing plate and latching extractors

Version _______________________________ B FINISH TABLE

3U ______________________________________3 Finish
6U ______________________________________6 Gold Chemical Film per Mil-DTL-5541 Class 1A, Type 1
Clear Chemical Film per Mil-DTL-5541 Class 3, Type II
VME (1101.2) ____________________________________ V Code Clear Chemical Film per Mil-DTL-5541 Class 1A, Type II
cPCI (VITA 30.1) ___________________________________C Letter Black Anodize per Mil-A-8625 Type II, Class 2
Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
Center rib location (mm.m) _______________________________ XXX “G”
PMC for ccPMC mounting _______________________________ PMC “R”
“CC”
Gold Chemical Film Finish _________________________________________G “B”
or choose from Finish Table “N”

Backing Thermal strip 1.6mm _________________________________________ B16
Backing Thermal strip 2.4mm _________________________________________ B24
Backing Plate 1.6mm ______________________________________________ P16
Backing Plate 2.4mm ______________________________________________ P24

Latching Extractor handle ____________________________________________________ L
no latching ________________________________________________________[blank]

www.calmark.com • 800-854-7086 8

VITA 1.6 Conduction Cooled Keying

Calmark has the answer for those
IEEE 1101.10 applications with keying
requirements, but do not have front panels.
IEEE 1101.10 specifications provides a
method for keying slots using programming
keys inserted into the front panel assembly
and card guide.
Conduction Cooled Modules used in military
and ruggedized systems do not use this front
panel system. VITA 1.6 standard provides a
method of keying for these types of systems.

FEATURES Coding Keys
• Complies with ANSI VITA 1.6 Standard
• Gold or Clear Chem Film aluminum Plug-In Module
Free Connector (P)
bracket Fixed Connector (J)
• 6 configurations per coding bracket set Coding Keys
• 36 configurations in a 6U conduction
Backplane shown - without J0 for clarity
cooled application
• Up to 1296 Keying combinations in a 6U

non-conduction cooled application
• Complimentary mounting hardware

included

CODEKEY BRACKETS
Material:

Aluminum Alloy
6061-T6 QQ-A-200/8

Finish:

Mil-C Class 1A, Type 1, Gold or
Mil-DTL-5541 Class 3, Type II, Clear

CODE PINS
Material:

Austenitic Stainless Steel

Finish:

None

WEIGHT
100 pcs. = 0.32 lbs.

9 www.calmark.com • 800-854-7086

VITA 1.6 Conduction Cooled Keying

CD key pair AD key pair AC key pair ZA key pair ZC key pair ZD key pair

The drawings above are representative of the J32 and P32 con gurations. J01 and P01 are mirror images.

Samples of coding key usage

CCKP01-AD CCKP32-ZD CCKP01-ZC CCKP32-CD CCKP01-ZA CCKP32-AC
mates with mates with mates with mates with mates with mates with
CCKJ01-AD CCKJ32-ZD CCKJ01-ZC CCKJ32-CD CCKJ01-ZA CCKJ32-AC

Part Number Code x - x -x-x Also available in Kit Form (see CCK-KIT -x -x
Conduction Cooled Keying contents example below)

CCK x Keying Configuration
Board or Backplane ZA ___________________________________________________ ZA
ZC ___________________________________________________ ZC
Free Connector: ____________________________ P
Fixed Connector: ___________________________ J ZD ___________________________________________________ ZD
AC ___________________________________________________ AC
Connector End AD ___________________________________________________ AD
CD ___________________________________________________ CD
01_______________________________________ 01
32 _______________________________________ 32

Keying Configuration

ZA ____________________________________________ ZA Thread Type
ZC ____________________________________________ ZC Metric 2.5mm x .45 thread: ____________________________________ [Blank]
ZD ____________________________________________ ZD Imperial 2-56 thread:_____________________________________________-1
AC ____________________________________________ AC Imperial 2-56 locking helicoil: _______________________________________ -2
AD ____________________________________________ AD Metric 2.5mm x .45 locking helicoil:____________________________________ -3
CD ____________________________________________ CD
Example of Kit Contents:
Thread Type
CCK-KIT-ZA
Metric 2.5mm x .45 thread: ______________________________ [blank]
Imperial 2-56 thread: ________________________________________1 Qty Item
Imperial 2-56 locking helicoil: ___________________________________2 1 CCKP01-ZA
Metric 2.5mm x .45 locking helicoil: _______________________________ 3 1 CCKJ01-ZA
1 CCKP32-ZA
Finish Type 1 CCKJ32-ZA
4 Complimentary Mounting Screws
Chem Film Gold _________________________________________ [blank] 4 Washers
Chem Film Clear _____________________________________________ CC

www.calmark.com • 800-854-7086 10

Series 223 & Series 224 Torque-Limiting “Card-Lok”

Calmark offers the Series 223 and 224 Series 223 & Series 224 Torque-Limiting “Card-Lok” Patent no. 7,883,289
Card-Lok retainer for cold plate / heat
exchanger applications. Ideal for field level Cold Plate
maintenance, the Series 223 and 224 Card-
Loks feature an integrated torque limiting 89066250
mechanism to simplify installation, optimize
clamping and thermal transfer performance, Recommended Gap:
and minimize the potential for damage to Board Module Assembly
the retainer, board and cold wall from over thickness plus
torqueing. 7.62 (.300) for Series 223,
8.00 (.315) for Series 224
FEATURES
• Integrated ratchet mechanism (US Patent Lock Nut
Rear Wedge
7,883,289) simplifies installation
• No need for specialized tools or knowledge Alignment Intermediate Wedge Bodies
Spring with alignment springs
of torque spec; ideal for field-level Front * Only one alignment spring
maintenance Wedge
• Simple installation - turn the screw until Assembly for lengths 122 (4.8) or less.
it clicks at least three times to achieve
the specified clamp force and optimize ALIGNMENT SPRINGS
thermal transfer Material:
• Available in two profiles – 5.72 mm x 6.86
mm (.225 in. x .270 in.) and 5.33 mm x Beryllium Copper QQ-C-533
7.24 mm (.210 in. x 2.85 in.) Finish:
• Lengths from 97 (3.8 in.) to 325 (12.8 in.)
in 12.7 (0.5 in.) increments Nickel QQ-N-290 Class I, GradeG Bright
• Flexible mounting options
• Available with gold chem film, clear chem WEIGHT
film, black anodized, hard black anodized, 1.12g/cm (.1oz/in)
or electroless nickel finish
• Alignment spring feature returns
wedge bodies to relaxed position when
unclamping
• Clamp force, thermal transfer, life cycle
and environmental (MIL 810) test results
available
• Each unit tested at factory prior to
shipment to ensure performance;
customer provided with a certificate of
conformance
• Different clamp force ranges (higher or
lower) are available as custom product

WEDGES
Material:

Aluminum alloy 6061-T6 per ASTM-B221 or
AMS-QQ-A-200/8
Finish:
See Finish Table

TORQUE-LIMITING MECHANISM
Material:

Stainless Steel 17-4 PH
Finish:

Dry Film Lube per Mil-L-46010 Type 1

SCREW
Material:

Stainless steel per ASTM-A582
Finish:

Passivate per AMS2700
LOCK NUT

Material: Stainless steel per MS21043-04
Finish: Silver plate per AMS 2410

11 www.calmark.com • 800-854-7086

Series 223 & Series 224 Torque-Limiting “Card-Lok”

AL

2.38 (.094) Hex Socket Cap Per ANSI/ Mounting holes shown in wedge body -
ASME B18.3 screw and alignment spring hidden for clarity

Center hole location
“E” option only
M/2

H 3.23 (.127) Ref.
W

MF (Ref) M
AL + 7.62 (.300) max
HE 6.3 (.14) max.
Card-Lok Expanded
89091112
Units: mm (in)
Unless otherwise speci ed:
.xx ± .25, .x ±.5 (.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010

Series W H max HE Min. AL range ± 1.3 (.050) M ± .13 (.005) MF ± .76 (.030)
223 5.72 (.225) 6.86 (.270) 8.26 (.325) From 97 (3.8) - 185 (7.3) 22.86 (.90)
224 5.33 (.210) 7.24 (.285) 8.64 (.340) From 198 (7.8) - 211 (8.3) 48.26 (1.90) AL+12.5 (.500)-M
From 224 (8.8) - 325 (12.8) 73.66 (2.90) 2

Part Number Code M A 223 - 4.80 E T2 Part Number Code Example:
Series 223 TL Card-Lok Five Piece A224- 4.80T2
Series 224 TL Card-Lok Five Piece Series 224 Card-Lok 121.9 (4.8) long assembly length, black
Prefix options anodized with two 2-56 threaded mounting holes

Metric Screw Head M2.5 Hex Drive_____________________ M Code FINISH TABLE
Standard Screw Head 3/32 Hex Drive_______________ [blank] Letter
[blank] Finish
Black Anodize ____________________________________ A Chemical Film Finish Gold per Mil-DTL-5541, Type 1
or choose from Finish Table______________________ see table “R” Class 1A
“A” Chemical Film Finish Clear per Mil-DTL-5541, Class 3 Type II
Suffix options “HA” Black Anodize per Mil-A-8625, Type II, Class 2
“EN” Hard Black Anodize per Mil-A-8625, Type III, Class 2
Min length. = 97 (3.8), Max length = 325 (12.8),in 13 (0.5) increments_____ length.xx Electroless Nickel per Mil-C-26074, Class 4 Grade B, Bright

Additional Center Mounting Hole_______________________________________ E MOUNTING METHOD TABLE
None____________________________________________________ [blank]
Method
Mounting options Rivet Mounting Ø1.70 (.067) hole with
2-56 tapped mounting hole or choose from Mounting Method Table _____________________ T2 3.96 (.156) counterbore x 5.08 (.200) deep and 100º x 3.56
(.140) countersink
Code 0-80 tapped hole
Letter 2-56 tapped hole
“H” M2 x 0.40 tapped hole
M2.5 x 0.45 tapped hole
“T0”
“T2”
“TM2”
“TM2.5”

www.calmark.com • 800-854-7086 12

Series 225 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the Series 225“Card-Lok”
Retainer for cold plate-heat exchanger
applications. This is an economical wedge
clamp retainer for high efficiency heat
transfer from Board Module Assembly to Cold
Wall.

FEATURES Series 225 - “Card-Lok” Retainer (cold plate)
• Maximum Reliability – Screw-actuated
Cold Plate
wedge action locks Board Module
Assembly in place 89066268
• Maximum Thermal Transfer – Wedge
action design provides maximum contact
between thermal paths on Board Module
Assembly and the heat sinking surface
• Maximum Resistance to Shock &
Vibration – Wedge action design locks
Board Module Assembly in place to
provide maximum resistance to shock and
vibration
• Zero Insertion & Extraction Forces –
Screw actuation provides zero insertion
and extraction force on Board Module
Assembly
• Design Flexibility – Special lengths,
finishes or other design variations
available on request

BODIES & WEDGES Recommended Gap:
Material: Board Module
Assembly thickness
Aluminum alloy 6061-T6 per ASTM-B221 or plus 7.62 (.300)
AMS-QQ-A-200/8
Finish:
See Finish Table

SCREW Board Module Rear Wedge
.093 in or 2.5 mm hex. drive socket head cap Assembly
screw Wedge body may be
riveted, screwed or
Material: bonded to Board
Stainless steel per ASTM-A582 Module Assembly
Front
Finish: Wedge
Passivate per AMS2700

WEIGHT
1.34 g/cm (.120 oz/in)

APPLICATION DATA

Recommended Torque 68 N-cm (6 in-lbs)
If Locking Element option add 22 N-cm (2 in-lbs)

13 www.calmark.com • 800-854-7086

Series 225 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX

Detail “V” 4.19 12.7 8.4 Detail “W” Screw Front
(.165) (.50) (.33) Provides added resistance to loosening from shock Wedge
Provides visual loOckPTIONAL REF and vibration. This option adds 2.5 (.10) to the
indication. 226 SUFFIXES
PART NUMBER

Detail “L” Unlocked Locked screw length unless combined with the“R”suffix
Provides prevai(5l.2i.n2067g) torque for resistance to
option, then adds 5.1 (.20) total. Lock Flat
Washer Washer
loosening from shock and vibration.

OPTION SUFFIX 10.16
Detail “L” Detail “R” Detail “K” (.400)
7.6 Prevents the unintentional max.
Provides prevailing torque Reduces the possibility of uninten- (.300) disassembly of screw from REF
max. REF rear wedge. This option adds
5.1 (.20) to the screw length. locknut
ocked for resistance to loosening Lock element per tional disassembly of the screw from rear spring
ess from shock and vibration. MIL-F-18240 wedge. cut away view of
al. Adds 22 N-cm (2 in-lbs) applied to thread This option adds 2.5 (.10) to the screw rear wedge
of torque to assembly. See of screw length unless combined with the“W”
application data oDnetail “R” possibility of suffix option, then 5.1 (.20) total.
previous sheet. Reduces the
unintentional
disassembly of the screw from rear wedge.
This option adds 2.5 (.10) to the sTcwreowhloelnegstshtandard. Extra hole added
unless combined with the “W” prewixtho“pEt”ioonp,tion. Assembly Length ± 0.76 (.030)
then 5.1 (.20) total. Two holes standard. Extra hole
added with “E” option
7.6
(.30)
max.

Mounting holes shown in wedge Units: mm (in)
body – Screw hidden for clarity

2.38 (.094) Hex Socket Cap Center hole location Unless otherwise speci ed:
Per ANSI/ASME B18.3 “E” option only .xx ± .25, .x ±.5 (.xxx ± .010, .xx ± .02)
6.86 (.270) max. Note: Each piece has a tolerance of ± .010
Detail “K” (±.M0.0/1253)

Prevents the unintentional disassembly of
screw from rear wedge. This option adds 5.1
(.20) to the screw length.
(.52.2725) 3.0 (.12) M = Assembly Length
10.1624.13 (.95) ±.76 (.03) minus 48.26 (1.900)
(.400)
max. ± .13 (.005)
Assembly Length +5.1 (.200)
or more depending on options

Screw advancement 1.8 (.07) max.
If “V” pre x option, 6.1 (.24) max.

cut awa8y.2vi6ew(.3o2f5r)emarin. locknut
wedge and captive nut spring

89066270

Part Number Code Part Number Code Example:
Series 225 Card-Lok Three Piece VA225CR4.80HR
None __________________________________ [blank] Series 225 Card-Lok three piece 121.9 (4.80) long with Visual Indicator,
Black Anodized Finish, standard rivet mounting hole and stainless steel
Prefix options M W V A 225 - 3.80 E H L R captive nut and lock nut option

Metric Screw Head M2.5 Hex Drive __________ M Code FINISH TABLE
Standard Screw Head 3/32 __________ [blank] Letter
[blank] Finish
Lock and Flat Washer _____________________ W “R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
None __________________________ [blank] “A” Chemical Film per Mil-DTL-5541 Class 3, Type II, Clear
“HA” Black Anodize per Mil-A-8625 Type II, Class 2
Visual Indicator ____________________________ V “EN” Hard Black Anodize per Mil-A-8625 Type III, Class 2
No Visual Indicator _____________________ [blank] Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright

Black Anodize ________________________________ A
or choose from Finish Table _________________ see table

Suffix options

Stainless Steel Captive (and Lock Nut if“R”option is also selected) ________CR
Standard Plated Steel___________________________________“-”

Assembly length in inches. Standard lengths are 71.12 (2.80), 96.52 (3.80) Code MOUNTING METHOD TABLE
and 121.9 (4.80). Other lengths available upon request. ____________ length.xx Letter
[blank] Method
Additional Center Mounting Hole _____________________________________ E “H” No mounting holes
None _________________________________________________ [blank] Rivet Mounting Ø1.70 (.067) hole with
Mounting Options - holes for rivet mounting _________________________________ H “T0” 3.96 (.156) counterbore x 5.08 (.200) deep and 100º x 3.56
or choose from Mounting Option Table _______________________________see table “T2” (.140) countersink
Lock Element _______________________________________________________ L “TM2” 0-80 tapped hole
None________________________________________________________ [blank] “TM2.5” 2-56 tapped hole
Lock Nut _____________________________________________________________ R M2 x 0.40 tapped hole
Captive Screw __________________________________________________________ K M2.5 x 0.45 tapped hole
None __________________________________________________________ [blank]

www.calmark.com • 800-854-7086 14

Series E225 - “Card-Lok” Retainer (Ejector)

Calmark offers the feature of Ejection of
the PC Card with its Series 225“Card-Lok”
Retainer. The Series E225 provides initial
ejection of the PC card without damaging
circuits, components or bending connector
pins. Ejector feature E is also available on
other Card-Lock Series on request.

FEATURES Series E225 - “Card-Lok” Retainer (ejector)
• Safe and Easy Ejection of PC Card–
3URYLGHV SLHFHDVVHPEO\VKRZQ
Screw actuation produces a jacking force 0LQ SLHFHDYDLODEOHRQUHTXHVW
that disengages the PC card from its
mating connector (MHFWLRQ 3RLQWRIFRQWDFW
• Maximum Reliability – Screw- ZLWKHMHFWLRQVXUIDFH
actuated wedge action locks PC card in
place $VVHPEO\
• Maximum Thermal Transfer – /HQJWK
Wedge-action design provides maximum
contact between thermal path on PC card &
and the heat sink surface 'LP
• Maximum Resistance to Shock &
Vibration – Wedge action design locks
PC card in place to provide maximum
resistance to shock and vibration
• Zero Insertion & Extraction Forces –
Screw actuation provides zero insertion
and extraction force on PC card
• Design Flexibility – Special lengths,
finishes or other design variations
available on request

MATERIALS & FINISHES &KRLFHRIPRXQWLQJ 0RXQWLQJ&HQWHUV
BODY & WEDGES KROHVIRUHLWKHUULYHW (TXDOWR$VVHPEO\
RUVFUHZPRXQWLQJ /HQJWKPLQXV$'LP
Aluminum alloy 6061-T6 per ASTM-B221 or 6HH31&RGH 6HH7DEXODWLRQ
AMS-QQ-A-200/8 ,IVFUHZPRXQWLQJ
LVXVHGSDUWVZLOOEH
Finish: IXUQLVKHGFRPSOHWHO\
See Finish Table DVVHPEOHG

SCREW %
Stainless Steel per ASTM-A582 or 'LP

Finish:
Passivate per MIL-S-5002

RETAINER RING APPLICATION DATA
Stainless Steel per ASTM-A582 All mounting options except for“H”(rivet
mouting), parts are completely assembled
Finish: for shipping.
Passivate per MIL-S-5002
For“H”(rivet) Mounting Option, the screw
THREADED INSERT assembly and wedge body are shipped
MS122116, MS21209-CO210 (locking), 50253-1064 unassembled.
Assemble parts as follows:
TOLERANCES
.xxx +/- .010 .xx +/- .02 1. Rivet Wedge Body to
(.xx +/-0.25 .x +/-0.5) Printed Circuit Board.

NOTES 2. Insert Screw Assembly
Clamping characteristics are the same as into Wedge Body.
standard Series 225.
“E”feature available on other Card-Lok series 3. Collapse Wedge
on request. Body to captivate
screw assembly.

15 www.calmark.com • 800-854-7086

Series E225 - “Card-Lok” Retainer (Ejector)

OPTION PREFIX 4.19 12.7 8.4 Detail “W” Screw Front
Detail “V” (.165) (.50) (.33) Wedge
REF Provides added resistance to loosening from shock
Provides visual lock 5.26 Locked and vibration. Flat
indicator. (.207) Unlocked Washer

Lock
Washer

Part Number Code Part Number Code Example:
Series E225 Card-Lok Three Piece WVE225-4.80T2

Prefix options M W V E A 225 - 3.80 H Series E225 Ejecting Card-Lok three piece 121.9 (4.80) long with Lock
and Flat Washer, Visual Indicator, Gold Chemical Film Finish, mounting
Metric Screw Head M2.5 Hex Drive ______________________ M holes drilled and tapped for 2-56 screw
Standard Screw Head 3/32 Hex Drive ________________ [blank]
FINISH TABLE
Lock and Flat Washer_________________________________ W Code
None______________________________________ [blank] Letter Finish
[blank] Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
Visual Indicator________________________________________V “R” Chemical Film per Mil-DTL-5541 Class 3,
No Visual Indicator ________________________________ [blank] Type II, Clear
“A” Black Anodize per Mil-A-8625 Type II, Class 2
Black Anodize _____________________________________________ A “HA” Hard Black Anodize per Mil-A-8625 Type III, Class 2
or choose from Finish Table _______________________________ see table “EN” Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright

Suffix options

Assembly length in inches. Standard lengths are 71.12 (2.80), 96.52 (3.80) and 121.9 (4.80).
Other lengths available upon request. __________________________________ length.xx

Mounting Options - holes for rivet mounting ________________________________________ H Code MOUNTING METHOD TABLE
or choose from Mounting Method Table _____________________________________ see table Letter
[blank] Method
“H” No mounting holes
Rivet Mounting Ø1.70 (.067) hole with
“T0” 3.96 (.156) counterbore x 5.08 (.200) deep and 100º x
“T2” 3.56 (.140) countersink
“TM2” 0-80 tapped hole
“TM2.5” 2-56 tapped hole
M2 x 0.40 tapped hole
M2.5 x 0.45 tapped hole

www.calmark.com • 800-854-7086 16

Series L225 - “Card-Lok” Retainer (Lever-Lok)

Calmark offers Series L225 Lever-Lok Series L225 - “Card-Lok” Retainer (lever-lok)
(“Card-Lok”) Retainer which provides tool
free, lever action locking on the Series 225 Cold Plate
configuration “Card-Lok.”
FEATURES
• High Reliability – Lever-actuated

wedge action locks Board Module
Assembly in place
• High Thermal Transfer – Wedge action
design provides maximum contact
between thermal path on Board
Module Assembly and heat sink
• High Resistance to Shock & Vibration
– Wedge action design locks Board
Module Assembly in place to provide
excellent protection against severe
shock and vibration
• Zero Insertion & Extraction Forces
– Lever actuation provides zero
insertion and extraction force on
Board Module Assembly
• Design Flexibility – Special lengths,
finishes or other design variations
available on request

MATERIALS & FINISHES

BODY & WEDGES 89066370
Aluminum alloy 6061-T6 per ASTM-B221 or
AMS-QQ-A-200/8

Finish:
Black Anodize per MIL-A-8625, Type II, Class 2

SCREW Board Module Assembly Recommended Gap:
Stainless steel per QQ-S-763 Board Module Assembly
thickness plus 7.62 (.300)
Finish:
Passivate per MIL-S-5002 Lock Nut
Belleville Washer Stack

Rear Wedge

LEVER ARM Wedge body may be
Aluminum alloy 6061-T6 per ASTM-B221 or screwed or bonded to
AMS-QQ-A-200/8 Board Module Assembly

Finish: Front Wedge
Hard Black Anodize per MIL-A-8625, Type III, Class 2

FLAT WASHER & Lever Arm
BELLEVILLE WASHERS
Flat Washer
Stainless Steel. QQ-S-763.
Passivate per MIL-S-5002.

WEIGHT
1.65g/cm (.15oz/in)

17 www.calmark.com • 800-854-7086

Series L225 - “Card-Lok” Retainer (Lever-Lok)

Lever width .270 24.13 (.950) ± 0.8 (.030) Assembly Length (AL) ± 0.76 (.03) 6.86
(6.86) Max Two holes standard. Extra hole (.270)
added with “E” option. max.
3.63 (1.43) 5.72 (.225)
.508 (.020) Center hole location
“E” option only
M/2
± .13 (.005)
M = AL minus 48.26 (1.90)

± .13 (.005)
AL + 22.86 (.900)

Capable of expansion range of 6.86 (.270) Units: mm (in) 89091113
to 8.26 (.325). Requires adjustment to an
exact dimension within this range. See Unless otherwise speci ed:
Application Data .xx ± .25, .x ±.5 (.xxx ± .010, .xx ± .02)

Note: Each piece has a tolerance of ± .010

APPLICATION DATA CLAMPING FORCE DATA
Direct force of assembly is approximately 534N (120 lbs), when
CLAMPING FORCE ADJUSTMENT PROCEDURE adjusted per recommended procedure.

NOTE: Lever-Lok furnished assembled but not Direct force of assembly is affected as follows: 8N (1.8 lbs) per each
adjusted. .025 (.001) variation of cold plate slot width, or 200N (45 lbs) per
1. Fasten Lever-Lok to Board Module Assembly. each full turn of locknut.
2. Insert Board Module Assembly into slot in

cold plate.
3. Actuate lever to locked/closed position.
4. Tighten locknut on end of screw until wedges initially

contact wall of cold plate slot, or slight insertion/extraction drag
is felt.

5. Additionally tighten locknut two (2) full turns.
DO NOT EXCEED TWO (2) TURNS.

6. Lever-Lok is now ready for use.
NOTE: Factory adjustment of clamping force
available on request.

Part Number Code Part Number Code Example:
Series L225 Card-Lok Three Piece L225-2.80

L225 - 3.80 E T0 Series L225 Ejecting Card-Lok three piece 71.12 (2.80) long with black
anodize finish and 2-56 tapped holes
Suffix options
Code MOUNTING METHOD TABLE
Assembly length in inches. Standard lengths range from Letter
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________________ length.xx [blank] Method
Other lengths available upon request “T0” 2-56` tapped hole
Additional Center Mounting Hole ______________________________________________ E “TM2” 0-80 tapped hole
No additional center mounting hole_______________________________________ [blank] “TM2.5” M2 x 0.40 tapped hole
Mounting Options - 0-80 tapped holes _____________________________________________ T0 M2.5 x 0.45 tapped hole
or choose from Mounting Option Table

www.calmark.com • 800-854-7086 18

Series 226 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the Series 226“Card-Lok”
retainer for cold plate-heat exchanger
applications. A maximum efficiency heat
sinking Board Module Assembly retainer
designed specifically for part length of 4.80
(121.9) inches or longer with five or more
wedge and body segments. The Series
226 design incorporates a Self-Positioning
feature which minimizes wedge and body
misalignment and provides easy insertion.

FEATURES Series 226 - “Card-Lok” Retainer (cold plate) 89066372
• Self-positioning design minimizes
Cold Plate
wedge and body misalignment
providing easy insertion
• Positive locking provides maximum
reliability
• Maximum thermal transfer
• Maximum resistance to shock and
vibration
• Zero insertion and extraction forces
• Design Flexibility - Special lengths,
finishes or other design variations
available on request

BODIES & WEDGES Board Module Assembly Recommended Gap:
Material: Wedge body may Board Module Assembly
be screwed, thickness plus 7.62 (.300)
Aluminum alloy 6061-T6 per ASTM-B221 or riveted or bonded
AMS-QQ-A-200/8 to Board Module Rear Wedge
Finish:
See Finish Table

SCREW
Material:

Stainless steel per ASTM-A582

Finish:
Passivate per AMS2700

WEIGHT Alignment Spring
1.34 g/cm (.120 oz/in)
Intermediate Wedge Bodies
with alignment springs

Front Wedge

APPLICATION DATA
Recommended Torque 68 N-cm (6 in-lbs)
If Locking Element option add 22 N-cm (2 in-lbs)

Screw

19 www.calmark.com • 800-854-7086

Series 226 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX 4.19 12.7 8.4 Detail “W” Screw Front
(.165) PART(R.5NE0F)UMBER (.33) Wedge
Detail “V” SUFFIXES
OPTIONAL 226 Provides added resistance to loosening from shock

Provides visual loDcketail “L” and vibration. This option adds 2.5 (.10) to the
screw length unless combined with the“R”suffix
indication. lPoroosveidneinsgprfreovmai(5l.s2i.n20h67go) ctokraqnudeUnvfloiobcrkreradetsioisnta. nce to Locked

option, then adds 5.1 (.20) total. Lock Flat
Washer Washer
OPTION SUFFIX
Detail “L” Detail “R” Detail “K” 10.16
Provides prevailing torque 7.6 Prevents the unintentional (.400)
for resistance to loosening Reduces the possibility of uninten- (.300) disassembly of screw from max.
max. REF rear wedge. This option adds REF
5.1 (.20) to the screw length.
ocked from shock and vibration. Lock element per tional disassembly of the screw from rear locknut
ess Adds 22 N-cm (2 in-lbs) MIL-F-18240 wedge. cut away view of spring
al. of torque to assembly. applied to thread This option adds 2.5 (.10) to the screw rear wedge
of screw
See application dDateataoinl “R” length unless combined with the“W”
previous sheet. suffix option, then 5.1 (.20) total.
Reduces the possibility of unintentional
disassembly of the screw from rear wedge.
This option adds 2.5 (.10) to the screw length
unless combined with the “W” pre x option,
then 5.1 (.20) total.
Assembly Length (AL) ± 1.3 (.05) Two holes standard. Extra hole
added with “E”. option
7.6
(.30)
max.

Assembly Length Range M ± .13 (.005) Mounting holes shown in wedge body – Units: mm (in)
121.9 (4.80) to 190.4 (7.49) 22.86 (.900) Screw and alignment spring hidden for clarity Unless otherwise speci ed:
.xx ± .25, .x ±.5 (.xxx ± .010, .xx ± .02)
190.5 (7.50) to 215.9 (8.49) 48.26 (1.90) Center hole location Note: Each piece has a tolerance of ± .010
“E” option only
2.38 (.094) 216.0 (8.50) to 329.9 (12.99) 73.66 (2.90)
M/2
PHeerxASNoScIk/eAtSCMaPDEpreBet1va8ei.nl3“tsKt”he unintentional disassembly of ± .13
screw from rear wedge. This option adds 5.1 (.005)

6.8(.620) to the screw length.
(270)
10.16
(.400)
5.72 3.0 (.12) Lmenagxt.h - M ± 1.14 (.045)
(.225) Assembly
2 M ± .13 (.005)

Screw length equal to assembly length plus .20” min in increments of .10”

(example: an assembly length of 4.85” would use a screw length of 5.10”) 3.6 (.14) max. screw advancement

locknut 7.9 (.31) if visual lock option

cut away view of rear spring
8.26w(.e3d25g)emainnd. captive nut

89091114

Part Number Code Part Number Code Example:
Series 226 Card-Lok Five Piece MWA226-4.80HK
None _____________________________________ [blank]
Series 226 Card-Lok five piece 121.9 (4.80) long with M2.5 hex drive, lock
Prefix options M W V A 226 - 4.80 E H L R and flat washer, black anodize finish, holes for rivet mounting and captive
screw feature
Metric Screw Head M2.5 Hex Drive______________ M
Standard Screw Head 3/32 Hex Drive________ [blank] Code FINISH TABLE
Letter
Lock and Flat Washer ________________________ W [blank] Finish
None _____________________________ [blank] “R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
“A” Chemical Film per Mil-DTL-5541 Class 3, Type II, Clear
Visual Indicator _______________________________ V “HA” Black Anodize per Mil-A-8625 Type II, Class 2
No Visual Indicator ________________________ [blank] “EN” Hard Black Anodize per Mil-A-8625 Type III, Class 2
Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
Black Anodize __________________________________ A
or choose from Finish Table____________________ see table

Suffix options

Stainless Steel Captive (and Lock Nut if“R”option
is also selected) _______________________________________ CR
Standard Plated Steel____________________________________“-”

Assembly length in inches. Standard lengths range from Code MOUNTING METHOD TABLE
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx Letter
Other lengths available upon request [blank] Method
“H”
Additional Center Mounting Hole _____________________________________ E No mounting holes
None _________________________________________________ [blank] “T0” Rivet Mounting Ø1.70 (.067) hole with 3.96 (.156)
Mounting Options - holes for rivet mounting _________________________________ H “T2” counterbore x 5.08 (.200) deep and 100º x 3.56 (.140) countersink
or choose from Mounting Option Table _______________________________ see table “TM2” 0-80 tapped hole
Lock Element _______________________________________________________ L “TM2.5” 2-56 tapped hole
M2 x 0.40 tapped hole
None_______________________________________________________ [blank] M2.5 x 0.45 tapped hole
Lock Nut _____________________________________________________________ R
Captive Screw __________________________________________________________ K
None __________________________________________________________ [blank]

www.calmark.com • 800-854-7086 20

Series 230 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the Series 230“Card-Lok”
retainer for cold plate-heat exchanger appli-
cations. A mid-width configuration, to meet
Board Module Assembly retainer expansion
requirements between the Series 225 and
240.

FEATURES Series 230 - “Card-Lok” Retainer (cold plate) 89066813
• Maximum Reliability – Screw-
Cold Plate
actuated wedge action locks Board
Module Assembly in place
• Maximum Thermal Transfer –
Wedge action design provides
maximum contact between
thermal paths on Board Module
Assembly and the heat sinking
surface
• Maximum Resistance to Shock &
Vibration – Wedge action design
locks Board Module Assembly
in place to provide maximum
resistance to shock and vibration
• Zero Insertion & Extraction Forces
– Screw actuation provides zero
insertion and extraction force on
Board Module Assembly
• Design Flexibility – Special lengths,
finishes or other design variations
available on request

BODIES & WEDGES Recommended Gap:
Material: Board Module Assembly
thickness plus 6.35 (.250)
Aluminum alloy 6061-T6 per ASTM-B221 or
AMS-QQ-A-200/8 Roll Pin
Finish:

See Finish Table

SCREW Board Module Assembly
Material:
Shaft may be riveted or
Stainless steel per ASTM-A582 screwed to Board
Module Assembly
Finish:
Passivate per AMS2700

WEIGHT
1.34 g/cm (.120 oz/in)

APPLICATION DATA
RWeceodmgmesended Torque 68 N-cm (6 in-lbs)
If Locking Element option add 22 N-cm (2 in-lbs)

Square Flatwasher
Lockwasher
Screw

21 www.calmark.com • 800-854-7086

Series 230 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX 4.19 12.7 8.4 Detail “W” Screw Front
(.165) (.50) (.33) Provides added resistance to loosening from shock and Lock Wedge
Detail “V” REF vibration. This option adds no additional screw length unless Washer
Provides visual lock combined with the“R”suffix option, then adds 2.5 (.10) total. Flat
indicationO. PTIONAL 226 PART NUMBERUnSloUckFedFIXES Washer
5.26 Locked
(.207)
Detail “L”

Provides prevailing torque for resistance to 5.1
OPTIOloNosSenUinFg FfroImXshock and vibration. Detail “R” (.20)
Detail “L” max. Detail “K” Detail “CR” 5.1
Reduces the REF 10.16 If the“R”option (.20)
(.400) is included with max.
Provides prevailing possibility of Prevents the uninten- max. this “CR” option, REF
REF then the locknut is
torque for resistance unintentional tional disassembly stainless steel.
to loosening from Lock element per disassembly of screw from rear locknut
shock and vibration. MIL-F-18240 wedge. This option spring
of the screw from rear wedge. This option
applied to thread adds no additional screw length with or adds 5.1 (.20) to the
of screw without“CR”unless included with“W” screw length.
Detail “R” possibility cut away view of
Reduces the of unintentioonpatlion, then 2.5 (.10) total. rear wedge

disassembly of the screw from rear wedge.
This option adds 2.5 (.10) to the screw length
unless combined with the “W” pre x option,
then 5.1 (.20) total.
Assembly Length (AL) ± 0.76 (.030)
7.6 Two holes standard. Extra hole
(.30) added with“E”option.
max.

2.38 (.094) Hex Socket Cap Per ANSI/ Mounting holes shown in wedge body – Units: mm (in.)
ASME B18.3 Screw hidden for clarity Unless otherwise specified:
5.72 (.220) Center hole location .xx ± .25, .x ±.5
“E”option only (.xxx ± .010, .xx ± .02)
Detail “K” M/2 Note: Each piece has a tolerance of ± .010
1.8 (.07) max. screw advancement
Prevents the unintentional disassembly of ± .13 (.005) 6.1 (.24) if visual lock option
screw from srceraerwwleedngget.hT. hi3s.0o(p.1t2i)on adds 5.1
5.59(.20) to the 10.16 24.13 (.950) ±.76 (.030) M = AL minus 48.26 (1.90)
(.220) ± .13 (.005)

(.400) Screw length equal to assembly length plus .20”min in increments of .10”
max. (example: an assembly length of 4.85”would use a screw length of 5.10”)

6.99 locknut
(.275) spring
cut away viemwin. of rear
wedge and captive nut

Part Number Code Part Number Code Example:
Series 230 Card-Lok Three Piece VA230CR4.80HR
None _____________________________________ [blank]
Series 230 Card-Lok three piece 121.9 (4.80) long with visual indicator, black
M W V A 230 - 3.80 E H L R anodize finish, standard rivet mounting holes and stainless steel lock nut
Prefix options option

Metric Screw Head M2.5 Hex Drive_____________ M Code FINISH TABLE
Standard Screw Head 3/32 Hex Drive_______ [blank] Letter
Lock and Flat Washer ________________________ W [blank] Finish
None _____________________________ [blank] “R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
Visual Indicator _______________________________V Chemical Film per Mil-DTL-5541 Class 3,
No Visual Indicator ________________________ [blank] “A” Type II, Clear
Black Anodize __________________________________ A “HA” Black Anodize per Mil-A-8625 Type II, Class 2
or choose from Finish Table____________________ see table “EN” Hard Black Anodize per Mil-A-8625 Type III, Class 2
Suffix options Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
Stainless Steel Lock Nut if“R”option is selected ___________________ CR
Standard Steel Lock Nut_________________________________ “-” Code MOUNTING METHOD TABLE
Letter
Assembly length in inches. Standard lengths range from [blank] Method
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx “H” No mounting holes
Other lengths available upon request Rivet Mounting Ø1.70 (.067) hole with
“T0” 3.96 (.156) counterbore x 4.19 (.165) deep and 100º x 3.56
Additional Center Mounting Hole ______________________________________E “T2” (.140) countersink
None _________________________________________________ [blank] “TM2” 0-80 tapped hole
Mounting Options - holes for rivet mounting __________________________________H “TM2.5” 2-56 tapped hole
or choose from Mounting Option __________________________________ see table M2 x 0.40 tapped hole
Lock Element _______________________________________________________ L M2.5 x 0.45 tapped hole
None________________________________________________________ [blank]
Lock Nut _____________________________________________________________ R
Captive Screw __________________________________________________________ K
None __________________________________________________________ [blank]

www.calmark.com • 800-854-7086 22

Series 231 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the Series 231“Card-Lok” Series 231 - “Card-Lok” Retainer (cold plate)
retainer for cold plate-heat exchanger
applications. A mid-width configuration, Cold Plate
to meet Board Module Assembly retainer
expansion requirements between the Series 89067434
225 and 240.

FEATURES
• Maximum Reliability – Screw-actuated

wedge action locks Board Module
Assembly in place
• Maximum Thermal Transfer – Wedge
action design provides maximum
contact between thermal paths on
Board Module Assembly and the heat
sinking surface
• Maximum Resistance to Shock &
Vibration – Wedge action design locks
Board Module Assembly in place to
provide maximum resistance to shock
and vibration
• Zero Insertion & Extraction Forces –
Screw actuation provides zero insertion
and extraction force on Board Module
Assembly
• Design Flexibility – Special lengths,
finishes or other design variations
available on request

BODIES & WEDGES Board Module Rear Wedge Recommended Gap:
Material: Assembly Board Module
Wedge body may Assembly
Aluminum alloy 6061-T6 per ASTM- be screwed, thickness plus
B221 or AMS-QQ-A-200/8 riveted or bonded 6.35 (.250)
Finish: to Board Module
See Finish Table Assembly Alignment
Spring
SCREW
Material: Intermediate Wedge
Bodies with alignment
Stainless steel per ASTM-A582 springs

Finish: Application Data
Passivate per AMS2700 Recommended Torque 68 N-cm (6 in-lbs)
If Locking Element option, add 22 N-cm (2 in-lbs)
WEIGHT
1.34 g/cm (.120 oz/in)

Front
Wedge

Screw

23 www.calmark.com • 800-854-7086

Series 231 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX

Detail “V” 4.19 12.7 8.4 Detail “W” Screw Front
iPnrdoivciadteios nv.OisuPaTlIlOocNkAL (.165) (.50) (.33) Provides added resistance to loosening from shock Wedge
REF and vibration. This option adds no additional screw
226 PART SUFFIXES
NUMBER

Detail “L” Unlocked Locked length unless combined with the“R”suffix option,
DttsPOoohroroelPqovcuitokTdesaaeeIfnsiOnoldprin“rNPlrvoegeirLvbosof”airSrsvsaoietildtUmaininenoignFsncge.pFrfreIoXvMLoamaopfiIlcLpssinck-hlFirgeoee-1dlcwte8oktm(2r5o.a2q.42e0nt6u70nhd)etrvefpoiaberdrrraetsioisnta.pauRsdDncdnoiesrcddsieaeenssuwsitttsbcneoeeafinolrmsiotitaitmylbodhln“odeyrafiReotlaifo”rtnwhaeel dscgree.wThleisnogpthtiownithm(R.5o2Ea.01rFx).
then adds 2.5 (.10) total. Lock Flat
Washer Washer
5.1
Detail “K” 10.16 Detail “CR” (.20)
Prevents the uninten- (.400) max.
tional disassembly max. If the“R”option is REF

REF included with this
of screw from rear “CR”option, then
wedge. This option the locknut is
adds 5.1 (.20) to the locknut stainless steel.
screw length. cut away view of spring
Detail “R” without“CR”unless included with “W” rear wedge
Reduces the unintentioonpatlion, then 2.5 (.10) total.
possibility of
disassembly of the screw from rear wedge.
This option adds 2.5 (.10) to the screw length
unless combined with the “W” pre x option, Assembly Length ± 1.3 (.050)

then 5.1 (.20) total. Two holes standard. Extra hole
added with “E” option
7.6
(.30)
max.

2.38 (.094) Assembly Length Range M ± .13 (.005) Mounting holes shown in wedge body –
Hex Socket Cap 121.9 (4.80) to 190.4 (7.49) 22.86 (.900) Screw and alignment spring hidden for clarity
Per ANSI/ASME B18.3 190.5 (7.50) to 215.9 (8.49) 48.26 (1.90) Units: mm (in)
Center hole location Unless otherwise speci ed:
“E” option only .xx ± .25, .x ±.5 (.xxx ± .010, .xx ± .02)
5.72 (.220) 216.0 (8.50) to 329.9 (12.99) 73.66 (2.90) Note: Each piece has a tolerance of ± .010
Detail “K” M/2
± .13 (.005)
Prevents the unintentional disassembly of
screw from rear wedge. This option adds 5.1
(.20) to the screw length.

3.0 (.121)0.16
A(sm.s4ea0xm0.) bl2y
5.72 Length - M ± 1.14 (.045) M ± .13 (.005)
(.220) Screw length assembly length plus
equal to .20” min in increments of .10”
(example: an assembly length of 4.85” would use a screw length of 5.10”)

3.6 (.14) max. screw advancement
7.9 (.31) if visual lock option
locknut

cut aw6ay.9v9iew of rear spring
wedge(a.2n7d5c)aptive nut

Part Number Code M W V A 231 - 4.80 E H L R 89091115
Series 231 Card-Lok Five Piece
Part Number Code Example:
Prefix options W231-4.80LR
Series 231 Card-Lok five piece 121.9 (4.80) long with lock and flat washer, gold
Metric Screw Head M2.5_________________ M chemical finish, lock element, no mounting holes and a plated steel lock nut
Standard Screw Head 3/32 ___________ [blank]
FINISH TABLE
Lock and Flat Washer ______________________ W Code
None ___________________________ [blank] Letter Finish
[blank] Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
Visual Indicator ____________________________ V “R” Chemical Film per Mil-DTL-5541 Class 3,
No Visual Indicator _____________________ [blank] Type II, Clear
“A” Black Anodize per Mil-A-8625 Type II, Class 2
Black Anodize ________________________________ A “HA” Hard Black Anodize per Mil-A-8625 Type III, Class 2
or choose from Finish Table _________________ see table “EN” Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright

Suffix options

Stainless Steel Lock Nut if“R”option is selected___________________ CR
Standard Plated Steel___________________________________“-”

Assembly length in inches. Standard lengths range from Code MOUNTING METHOD TABLE
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx Letter
Other lengths available upon request [blank] Method
“H” No mounting holes
Additional Center Mounting Hole ______________________________________ E Rivet Mounting Ø1.70 (.067) hole with
None _________________________________________________ [blank] “T0” 3.96 (.156) counterbore x 4.19 (.165) deep and 100º x 3.56
Mounting Options - holes for rivet mounting _________________________________ H “T2” (.140) countersink
or choose from Mounting Option Table _______________________________ see table “TM2” 0-80 tapped hole
Lock Element _______________________________________________________ L “TM2.5” 2-56 tapped hole
None_______________________________________________________ [blank] M2 x 0.40 tapped hole
Lock Nut _____________________________________________________________ R M2.5 x 0.45 tapped hole
Captive Screw __________________________________________________________ K
None __________________________________________________________ [blank]

www.calmark.com • 800-854-7086 24

Series 235 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the 3 piece Series 235 Series 235 - “Card-Lok” Retainer (cold plate)
metric“Card-Lok”retainer for cold plate-
heat exchanger applications. Closed shape Cold Plate
segments provide maximum rigidity
and resistance to distortion under load. 89067449
Dual front and rear threads accomplishes
rapid clamp and release action. Enclosed
spring maintains alignment of segments
providing easy insertion.

FEATURES
• Closed shape segments provide

maximum rigidity and resistance to
distortion under load
• Dual threads provide rapid clamp and
release action
• Enclosed springs maintain alignment of
segments providing easy insertion
• Maximum resistance to shock and
vibration
• Zero insertion and extraction forces
• Design Flexibility - Special lengths,
finishes or other design variations
available on request

BODIES & WEDGES Board Recommended Gap:
Material: Module Board Module Assembly
Assembly thickness plus 8.00 (.315)
Aluminum alloy 6061-T6 per ASTM-B221 or
AMS-QQ-A-200/8 Rear Wedge
Finish: WWeeddgegbeobdyomdyaymbeasycrbeewed or bonded to
See Finish Table BMsocaorreddwuMeloeddAuolsersAbesmosenbmdlbyeldy to Board

SCREW
Material:

Stainless steel per ASTM-A582

Finish:
Passivate per MIL-S-5002

WEIGHT
1.34 g/cm (.120 oz/in)

Alignment Spring

Front Wedge

APPLICATION DATA
Screw Recommended Torque 68 N-cm (6 in-lbs)

25 www.calmark.com • 800-854-7086

Series 235 - “Card-Lok” Retainer (Cold Plate)

2.0 (.079) Hex Socket Cap Assembly Length ± 0.76 (.030)
Per ANSI/ASME B18.3

7.32 (.288) 22.86 (.900) ± .76 (.030) M/2 ± .13 (.005) See“E”suffix option
max. M = Assembly Length
5.84 minus 45.72 (1.80) ± .13 (.005)
(.230)

8.64 (.340) min.

Two holes standard. Extra hole
added with“E”option.
See“E”suffix option.

Units: mm (in.)
Unless otherwise specified:
.xx ± .25, .x ±.5
(.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010

Part Number Code SA 235 - 4.80 E TM2.5 P Part Number Code Example:
Series 235 Card-Lok Three Piece A235-2.80ETM2.5

Prefix options Series 235 Card-Lok three piece, black anodized, 71.12 (2.80) assembly
length, with three M2.5 tapped mounting holes.

Slotted Drive ______________________________ S FINISH TABLE
2mm Hex Drive _______________________ [blank]
Finish
Finish options Code Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
Letter Chemical Film per Mil-DTL-5541 Class 3,
Black Anodize ________________________________ A [blank] Type II, Clear
or choose from Finish Table “R” Black Anodize per Mil-A-8625 Type II, Class 2
Hard Black Anodize per Mil-A-8625 Type III, Class 2
Assembly length in inches. Standard lengths range from “A” Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx “HA”
Other lengths available upon request “EN”

Additional Center Mounting Hole _____________________________________ E Code MOUNTING METHOD TABLE
None _________________________________________________ [blank] Letter
Mounting Options - M2.5 tapped hole____________________________________ TM2.5 [blank] Method
or choose from Mounting Option Table __________________________________ see table “T0” No mounting holes
Locking Insert Option_________________________________________________________P “T2” 0-80 tapped hole
“TM2” 2-56 tapped hole
None _____________________________________________________________ [blank] “TM2.5” M2 x 0.40 tapped hole
M2.5 x 0.45 tapped hole

www.calmark.com • 800-854-7086 26

Series 236 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the 5 piece Series 236
metric“Card-Lok”retainer for cold plate-
heat exchanger applications. Closed shape
segments provide maximum rigidity
and resistance to distortion under load.
Dual front and rear threads accomplishes
rapid clamp and release action. Enclosed
springs maintain alignment of segments
providing easy insertion.

FEATURES Series 236 - “Card-Lok” Retainer (cold plate) 89067453
• Closed shape segments provide
Cold Plate Recommended Gap:
maximum rigidity and resistance to Board Module Assembly
distortion under load WedWgeedbogdeybmoadyybmeasycrebweed or thickness plus 8.00 (.315)
• Dual threads provide rapid clamp and bondsMceordedtwuoelBedoAaosrrdsbeMmoonbddluyelde AtossBemoabrldy
release action Rear Wedge
• Enclosed springs maintain alignment of Board
segments providing easy insertion Module
• Maximum resistance to shock and Assembly
vibration
• Zero insertion and extraction forces Intermediate Wedge Bodies
• Design Flexibility - Special lengths, with alignment springs
finishes or other design variations
available on request

BODIES & WEDGES
Material:

Aluminum alloy 6061-T6 per ASTM-B221 or
AMS-QQ-A-200/8
Finish:
See Finish Table

SCREW
Material:

Stainless steel per ASTM-A582

Finish:
Passivate per MIL-S-5002

WEIGHT
1.34 g/cm (.120 oz/in)

Alignment Springs

APPLICATION DATA
Recommended Torque 68 N-cm (6 in-lbs)

Front Wedge

Screw

27 www.calmark.com • 800-854-7086

Series 236 - “Card-Lok” Retainer (Cold Plate)

2.0 (.079) Hex Socket Cap Assembly Length - M ± .76 (.045) Assembly Length ± 1.3 (.050)
Per ANSI/ASME B18.3 2 Center hole location

7.32 (.288) M/2 “E” option only
max. ± .13 (.005)
5.84
(.230) M ± .13 (.005)

8.64 (.340) min.

Assembly Length Range M

121.9 (4.80) to 197.9 (7.79) 25.40 (1.00) Two holes standard. Extra hole
198.1 (7.80) to 329.9 (12.99) 50.80 (2.00) added with “E” option.

Units: mm (in) 89091116

Unless otherwise speci ed:
.xx ± .25, .x ±.5 (.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010

Part Number Code S A 236 - 5.80 E TM2.5 P Part Number Code Example:
Series 236 Card-Lok Five Piece A236-2.80ETM2.5
Prefix options
Series 236 Card-Lok five piece, black anodized, 71.12 (2.80) asembly
Slotted Drive ______________________________ S length, with three M2.5 tapped mounting holes.
2mm Hex Drive _______________________ [blank]
FINISH TABLE
Finish options Code
Letter Finish
Black Anodize ________________________________ A [blank] Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
or choose from Finish Table “R” Chemical Film per Mil-DTL-5541 Class 3, Type II, Clear
“A” Black Anodize per Mil-A-8625 Type II, Class 2
Suffix options “HA” Hard Black Anodize per Mil-A-8625 Type III, Class 2
“EN” Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
Assembly length in inches. Standard lengths range from
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx Code MOUNTING METHOD TABLE
Other lengths available upon request Letter
[blank] Method
Additional Center Mounting Hole ______________________________________ E “T0” No mounting holes
None __________________________________________________ [blank] “T2” 0-80 tapped hole
Mounting Options - M2.5 tapped hole ____________________________________ TM2.5 “TM2” 2-56 tapped hole
or choose from Mounting Option Table__________________________________ see table “TM2.5” M2 x 0.40 tapped hole
Locking Insert Option________________________________________________________ P M2.5 x 0.45 tapped hole
None ____________________________________________________________ [blank]

www.calmark.com • 800-854-7086 28

Series 240 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the Series 240“Card-Lok”
retainer for cold plate-heat exchanger
applications. A narrow configuration Board
Module Assembly retainer that provides
maximum heat sinking efficiency for high
density card spacing.

FEATURES Series 240 - “Card-Lok” Retainer (cold plate)
• Narrow width allows minimum card

spacing
• Positive locking provides maximum

reliability
• Maximum thermal transfer
• Maximum resistance to shock and

vibration
• Zero insertion and extraction forces
• Design Flexibility - Special lengths,

finishes or other design variations
available on request

BODIES & WEDGES Cold Plate
Material:
89067499
Aluminum alloy 6061-T6 per ASTM-B221 or
AMS-QQ-A-200/8
Finish:
See Finish Table

SCREW
Material:

Stainless steel per ASTM-A582

Finish: Recommended Gap:
Passivate per MIL-S-5002 Board Module Assembly
thickness plus 5.33 (.210)

WEIGHT Board Module Assembly
.86 g/cm (.077 oz/in)

Rear Wedge

Wedge body may be screwed,
riveted or bonded to Board
Module Assembly

Front Wedge

APPLICATION DATA
Recommended Torque 68 N-cm (6 in-lbs)
If Locking Element option add 22 N-cm (2 in-lbs)

Screw

29 www.calmark.com • 800-854-7086

OPTIONAL 226 PART NUMBER PREFIXES Series 240 - “Card-Lok” Retainer (Cold Plate)
OPTIONAL 226 PART NUMBER SUFFIXES

Detail “V” Detail “L”

Provides visual lock indication. 8.4 Provides prevailing torque for resistance to
(.33)
OPTION PREFIX OPTION SUFlFooIXsening from shock and vibration.
De(1.t52a0.7)il “W”
Detail “L” Detail “R” 5.1
(.20)
4.19 Provides added resistance to loosening from shock and Provides prevailing torque for Reduces the possibility of max.
resistance to loosening from unintentional disassembly of the REF
(.165) vibration. This option adds 2.54 (.100) to the screw length
5.26 when coUmnbloinckeeddwith the “R”option. shock and vibration. Adds screw from rear wedge. This option
Locked 22 N-cm (2 in-lbs) torque to Lock element per adds adds 2.54 (.100) to the screw
assembly. See application MIL-F-18240 length when combined with the
(.207) data on previous sheet. applied to thread “W”option. Lock Nut material:
of screw stainless steel.
Screw Front Detail “R”
Wedge

Reduces the possibility of unintentional
disassembly of the screw from rear wedge.
This option adds 2.5 (.10) to the screw length
Lock Flat unless combined with the “W” pre x option,
Detail “W” Washer Washer then 5.1 (.20) total.

Provides added resistance to loosening from shock and 7.6
vibration. This option adds 2.5 (.10) to the screw length unless (.30)
combined with the “R” su x option, then adds 5.1 (.20) total. Assembly Length ±m0.a7x6.(.030)

Screw Front Two holes standard. Extra hole
Wedge added with“E”option.

2.38 (.094) Hex Socket Cap Per ANSI/ Mounting holes shown in wedge body –
ASME B18.3 Screw hidden for clarity
Detail “K”
4.57 (.180) max. Center hole location

Lock Flat P(s.c2rer0ev)wetnoftrtsohmtehes±rceu.ra1eMn3rw/i(w2n.00tlee5ed“)nnEg”gtoietop.htniTo. anhloisndlyoispatsisoenmabdldyso5f .1
Washer Washer

10.16
(.400)
max.
6.10 3.0 (.12)
(.240)
24.13 (.950) ±.76 (.035) M = Assembly Length minus
48.26 (1.90) ± .13 (.005)

Screw length equal toAassseemmbblylyLleennggtthh+pl5u.s1.(2.02”0m0)in in increments of .10”
(example: an assembly length of 4.85”would use a screw leoncgkthnouf 5t.10”)

cut away view of rear spring 2.1 (.080) max. screw advancement
wedge and captive nut

5.59 (.220) min.

Part Number Code M W A 240 - 4.80 E H L R Units: mm (in.)
Series 240 Card-Lok Three Piece Unless otherwise specified:
.xx ± .25, .x ±.5
Prefix options (.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010
Metric Screw Head M2.5 Hex Drive _____________ M
Standard Screw Head 3/32 Hex Drive________ [blank] Part Number Code Example:
A240CR3.80EHLR
Series 240 three piece Card-Lok, black anodized finish, 96.52 (3.80) long,
holes for rivet mounting including an extra center mounting hole, with
locking element on the screw thread and a stainless steel locknut

Lock and Flat Washer ________________________ W Code FINISH TABLE
None _____________________________ [blank] Letter
[blank] Finish
Black Anodize ________________________________ A “R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
or choose from Finish Table _________________ see table Chemical Film per Mil-DTL-5541 Class 3,
“A” Type II, Clear
Suffix options “HA” Black Anodize per Mil-A-8625 Type II, Class 2
“EN” Hard Black Anodize per Mil-A-8625 Type III, Class 2
Assembly length in inches. Standard lengths range from Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx
Other lengths available upon request

Additional Center Mounting Hole _______________________________________ E
None ___________________________________________________ [blank]

Mounting Options - holes for rivet mounting____________________________________ H Code MOUNTING METHOD TABLE
or choose from Mounting Option Table _________________________________ see table Letter Method
Lock Element __________________________________________________________ L [blank] No mounting holes
None _________________________________________________________ [blank] “H” Rivet Mounting Ø1.70 (.067) hole with
Lock Nut ________________________________________________________________R 3.96 (.156) counterbore x 5.08 (.200) deep and 100º x 3.56
None ____________________________________________________________ [blank] “T0” (.140) countersink
“T2” 0-80 tapped hole
“TM2” 2-56 tapped hole
“TM2.5” M2 x 0.40 tapped hole
M2.5 x 0.45 tapped hole

www.calmark.com • 800-854-7086 30

Series 245 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the Series 245“Card-Lok”
retainer for cold plate-heat exchanger
applications. A maximum efficiency heat
sinking Board Module Assembly retainer
offered to retrofit the Series 225 but uses a
6-32 screw to provide greater clamping force
and load capacity.

FEATURES

• Maximum reliability - Screw-actuated
wedge action locks Board Module
Assembly in place
• Maximum thermal transfer - Wedge
action design provides maximum
contact between thermal paths on Series 245 - “Card-Lok” Retainer (cold plate)
Board Module Assembly and the heat
sinking surface
• Maximum resistance to shock and
vibration - Wedge action design locks
Board Module Assembly in place to
provide maximum resistance to shock
and vibration
• Zero insertion and extraction forces -
Screw actuation provides zero insertion Cold Plate
and extraction force on Board Module
Assembly 89067528
• Design flexibility - Special lengths,
finishes or other design variations
available on request

BODIES & WEDGES Recommended Gap:
Material: Board Module
Assembly thickness
Aluminum alloy 6061-T6 per ASTM-B221 or plus 7.62 (.300)
AMS-QQ-A-200/8
Finish: Board Module
Assembly
See Finish Table

SCREW Rear Wedge
Material:
Wedge body may be
Stainless steel per ASTM-A582 screwed, riveted or
bonded to Board Module
Finish: Assembly
Passivate per MIL-S-5002

WEIGHT Front
1.77 g/cm (.159 oz/in) Wedge

Application Data
Recommended Torque 113 N-cm (10 in-lbs)
If Locking Element option, add 34 N-cm (3 in-lbs)

Screw

31 www.calmark.com • 800-854-7086

Series 245 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX

Detail “V” 14.2 9.9 Detail “W” Screw Front
(.39) Provides added resistance to loosening from shock and Lock Wedge
isodPncprrdroiteviviecwoiadnttloeieaosn2dnv.gd3.itssC8hu5ha(.a.l00nl89og4c(eOlPD.k)os2r.ePoo0ThtsvTh)eaeiiItxdisnOole(i“5.nN1s.L09g”p0A7)rfLreov2m(a.622i.55l6si98nh)PgoActRokrTa(Rq.5nENu6FdU)eUnvlfoMoicbkreBrdraeEtsiRoisnSta.UnFceFItXoES vibration. This option adds 2.5 (.10) to the screw length Washer Flat
Locked when combined with the“R”suffix option. Washer

OPTION SUFFIX Detail “R” 7.6 Detail “K” 10.16
Detail “L” Reduces the possibility of unintentional (.30) Prevents the unintentional disas- (.400)
Provides prevailing torque max. sembly of screw from rear wedge. max.
REF This option adds 5.08 (.200) to the REF
screw length.
Locked for resistance to loosening Lock element per disassembly of the screw from rear locknut
nless from shock and vibration. MIL-F-18240 wedge. This option adds 2.54 (.10) cut away view of spring
otal. Adds 34 N-cm (3 in-lbs) applied to thread to the screw length unless when rear wedge
torque to assembly. See of screw combined with the“W”suffix option,
application data oDneptraeivli“oRu”s then it adds 5.08 (.20).
sheet.
Reduces the possibility of unintentional
disassembly of the screw from rear wedge.
This option adds 2.5 (.10) to the screw length Assembly Length ± 0.76 (.030) Two holes standard. Extra hole
added with“E”option.
unless combined with the “W” pre x option,
then 5.1 (.20) total.

2.78 (.109) Hex Socket Cap Per ANSI/ 7.6 Mounting holes shown in wedge body –
ASME B18.3 (.30) Screw hidden for clarity
6.86 (.270) max. max.
Center hole location
“E”option only

M/2
± .13 (.005)

Detail “K”

6.60 Prevents the unint3e.3n(t.1io3)nal disassembly of M = Assembly Length minus
(.260) screw from rear wedge. This o24p.1t3io(.n950a)d±d.7s6 (5.0.130) 48.26 (1.90) ± .13 (.005)

(.20) to the screw length. Screw length equal to assembly length plus
.20”min in increments of .10”
10.16 1.8 (.070) max. screw advancement
(.400) (example: an assembly length of 4.85” if visual lock option 6.1 (.240)
max. would use a screw length of 5.10”)
Units: mm (in.)
8.26 locknut Unless otherwise specified:
(.325) spring .xx ± .25, .x ±.5
min. (.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010
cut away view of rear
wedge and captive nut

Part Number Code 245 - 4.80 E H L R Part Number Code Example:
Series 245 Card-Lok Three Piece 245-3.80H Series 245 three piece Card-Lok, 96.52 (3.80) long, gold chemical
film finish with holes for rivet mounting
MWVA
Prefix options

Metric Screw Head M2.5_________________ M Code FINISH TABLE
Standard Screw Head 7/64 ___________ [blank] Letter
Lock and Flat Washer _____________________ W [blank] Finish
None __________________________ [blank] “R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
Visual Indicator (changes hex drive to 3/32)___________ V Chemical Film per Mil-DTL-5541 Class 3,
No Visual Indicator _____________________ [blank] “A” Type II, Clear
Black Anodize ________________________________ A “HA” Black Anodize per Mil-A-8625 Type II, Class 2
or choose from Finish Table _________________ see table “EN” Hard Black Anodize per Mil-A-8625 Type III, Class 2
Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
Suffix options

Stainless Steel Lock Nut if“R”option is selected ___________________ CR
Standard Plated Steel___________________________________ “-”

Assembly length in inches. Standard lengths range from Code MOUNTING METHOD TABLE
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx Letter
Other lengths available upon request [blank] Method
“H” No mounting holes
Additional Center Mounting Hole _____________________________________ E Rivet Mounting Ø1.70 (.067) hole with
None _________________________________________________ [blank] “T0” 3.96 (.156) counterbore x 5.08 (.200) deep and 100º x 3.56
“T2” (.140) countersink
Mounting Options - holes for rivet mounting _________________________________ H “TM2” 0-80 tapped hole
or choose from Mounting Option Table ______________________________ see table “TM2.5” 2-56 tapped hole
Lock Element _______________________________________________________ L M2 x 0.40 tapped hole
None_______________________________________________________ [blank] M2.5 x 0.45 tapped hole
Lock Nut _____________________________________________________________ R
None __________________________________________________________ [blank]
Captive Screw __________________________________________________________ K
None __________________________________________________________ [blank]

www.calmark.com • 800-854-7086 32

Series 250 - “Card-Lock” Retainer (Cold Plate)

Calmark offers the Series 250“Card-Lok”
Retainer for cold plate-heat exchanger
applications. A maximum efficiency heat
sinking Board Module Assembly retainer
offered to provide greater clamping force and
load capacity for Board Module Assembly of
greater weight and mass.

FEATURES Series 250 - “Card-Lok” Retainer (cold plate)
• Maximum reliability - Screw-actuated
Cold Plate
wedge action locks Board Module
Assembly in place 89067539
• Maximum thermal transfer - Wedge
action design provides maximum
contact between thermal paths on
Board Module Assembly and the heat
sinking surface
• Maximum resistance to shock and
vibration - Wedge action design locks
Board Module Assembly in place to
provide maximum resistance to shock
and vibration
• Zero insertion and extraction forces -
Screw actuation provides zero insertion
and extraction force on Board Module
Assembly
• Design flexibility - Special lengths,
finishes or other design variations
available on request

BODIES & WEDGES
Material:

Aluminum alloy 6061-T6 per ASTM-B221 or Recommended Gap:
AMS-QQ-A-200/8 Board Module Assembly
Finish: thickness plus 10.80 (.425)

See Finish Table

SCREW Board Module Assembly
Material:
Rear Wedge
Stainless steel per ASTM-A582
Wedge body may be screwed,
Finish: riveted or bonded to Board
Passivate per MIL-S-5002 Module Assembly

WEIGHT Front Wedge
3.63 g/cm (.325 oz/in)
APPLICATION DATA
Recommended Torque 226 N-cm (20 in-lbs)
If Locking Element option add 45 N-cm (4 in-lbs)

Screw

33 www.calmark.com • 800-854-7086

Series 250 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX

Detail “V” 12.7 8.4 Detail “W”
(.50) (.33) Provides added resistance to loosening from shock and Screw Front
Provides visual lock REF vibration. This option adds 5.08 (.20) to the screw length Wedge
indication. This opOtiPoTnIO(.6N2.79A59)L 226 PART NUMBER SUFFIXES when combined with the“R”suffix option.
adds 5.08 (.20) toDtheetail “L” 8.89
screw length. Unlocked Locked
Provides prev(a.3i5li0n) g torque for resistance
loosening from shock and vibration. to Lock Flat
Washer Washer
OPTION SUFFIX
Detail “R” Detail “K” 10.16
Detail “L” 7.6 (.400)
Reduces the possibility of (.30) max.
Provides prevailing torque unintentional disassembly of the max. Prevents the unintentional disas- REF
for resistance to loosening screw from rear wedge. This option REF sembly of screw from rear wedge.
from shock and vibration. adds no additional screw length un-
ocked Adds 45 N-cm (4 in-lbs) Lock element per less included with“W”option, then This option adds 5.08 (.200) to
less torque to assembly. See MIL-F-18240 the screw length.
tal. applied to thread locknut
of screw
application data oDneptraeivl “ioRu”s 5.08 (20) total. cut away view of spring
sheet. rear wedge
Reduces the unintentional
possibility of
disassembly of the screw from rear wedge.
This option adds 2.5 (.10) to the screw length
unless combined with the “W” pre x option, Assembly Length ± 0.76 (.030)
then 5.1 (.20) total. Two holes standard. Extra hole
added with“E”option.

7.6
(.30)
3.57 (.141) Hex Socket Cap max. Mounting holes shown in wedge body –
Per ANSI/ASME B18.3 Screw hidden for clarity

Center hole location

9.78 (.385) max. “E”option only
M/2
± .13 (.005)

Detail “K”
sPcrerevwenftrsomthereuanriwnteedngt4ie.o1. nT(.1ah6li)sdoispatsi2so4e.n1m3a(b.d9l5dy0s)o±5f..716 (.035)
9.53 (.20) to the screw length. M = Assembly Length minus
(.375) 48.26 (1.90) ± .13 (.005)

10.16 Screw length equal to assembly length plus
(.400) .20”min in increments of .10”
max. 2.6 (.100) max. screw advancement
(example: an assembly length of 4.85” if visual lock option 6.1 (.240)
would use a screw length of 5.10”)

11.94 (.470) min. locknut Units: mm (in.)
cut away view of rear spring Unless otherwise specified:
wedge and captive nut .xx ± .25, .x ±.5
(.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010

Part Number Code M W V A 250 - 3.80 E H L R Part Number Code Example:
Series 250 Card-Lok Three Piece V250CR4.80HR
Series 250 Card-Lok three piece 121.9 (4.80) long with Visual Indicator, gold
Prefix options chemical film finish, standard rivet mounting hole and stainless steel lock
nut option
Metric Screw Head M4 Hex Drive ______________ M
Standard Screw Head 9/64 Hex Drive________ [blank] Code FINISH TABLE
Lock and Flat Washer ________________________ W Letter
None _____________________________ [blank] [blank] Finish
“R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
Visual Indicator _______________________________ V Chemical Film per Mil-DTL-5541 Class 3,
No Visual Indicator ________________________ [blank] “A” Type II, Clear
“HA” Black Anodize per Mil-A-8625 Type II, Class 2
Black Anodize __________________________________ A “EN” Hard Black Anodize per Mil-A-8625 Type III, Class 2
or choose from Finish Table____________________ see table Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright

Suffix options

Stainless Steel Lock Nut if“R”option is selected ____________________ CR
Standard Plated Steel Lock Nut ______________________________ “-”

Assembly length in inches. Standard lengths range from Code MOUNTING METHOD TABLE
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx Letter
Other lengths available upon request [blank] Method
“H” No mounting holes
Additional Center Mounting Hole _____________________________________ E Rivet Mounting Ø3.45 (.136) hole with
None _________________________________________________ [blank] “T0” 4.95 (.195) counterbore x 7.62 (.300) deep and 100º x 4.95
Mounting Options - holes for rivet mounting _________________________________ H “T2” (.195) countersink
or choose from Mounting Option Table ______________________________ see table “TM2” 0-80 tapped hole
Lock Element _______________________________________________________ L “TM2.5” 2-56 tapped hole
None_______________________________________________________ [blank] M2 x 0.40 tapped hole
Lock Nut _____________________________________________________________ R M2.5 x 0.45 tapped hole
None __________________________________________________________ [blank]
Captive Screw __________________________________________________________ K www.calmark.com • 800-854-7086
None __________________________________________________________ [blank]

34

Series 255 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the Series 255“Card-Lok”
Retainer for cold plate-heat exchanger
applications. A maximum efficiency heat
sinking Board Module Assembly retainer
offered to provide greater clamping force and
load capacity for Board Module Assembly of
greater weight and mass.

FEATURES Series 255 “Card-Lok” Retainer (cold plate)
• Maximum reliability - Screw-actuated
Cold Plate
wedge action locks Board Module
Assembly in place 89067580
• Maximum thermal transfer - Wedge
action design provides maximum
contact between thermal paths on
Board Module Assembly and the heat
sinking surface
• Maximum resistance to shock and
vibration - Wedge action design locks
Board Module Assembly in place to
provide maximum resistance to shock
and vibration
• Zero insertion and extraction forces -
Screw actuation provides zero insertion
and extraction force on Board Module
Assembly
• Design flexibility - Special lengths,
finishes or other design variations
available on request

BODIES & WEDGES Recommended Gap:
Board Module Assembly
Material: thickness plus 13.33 (.525)

Aluminum alloy 6061-T6 per ASTM-B221 or

AMS-QQ-A-200/8

Finish: Board Module Assembly

See Finish Table

SCREW Rear Wedge
Material: Wedge body may be screwed,
riveted or bonded to Board
Stainless steel per ASTM-A582 Module Assembly
Finish: Front Wedge

Passivate per MIL-S-5002

WEIGHT
4.74 g/cm (.425 oz/in)

APPLICATION DATA
Recommended Torque 350 N-cm (31 in-lbs)
If Locking Element option add 57 N-cm (5 in-lbs)

Screw

35 www.calmark.com • 800-854-7086

Series 255 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX

Detail “V” 14.5 10.2 Detail “W” Screw Front
(.57) (.40) Provides added resistance to loosening from shock and Wedge
Provides visual lock REF vibration. This option adds 5.08 (.20) to the screw length
indication. This optiOonPTIO(7.3.N8170A) L 226 PART NUMBER SUFFIXES when combined with the“R”suffix option.
adds 5.08 (.20) to thDeetail “L” 10.92
screw length. Unlocked Locked
Provides pre(.4v3a0)iling torque for
resistance to Lock Flat
loosening from shock and vibration. Washer Washer

OPTION SUFFIX Detail “R” 7.6 Detail “K” 10.16
(.30) (.400)
Detail “L” Reduces the possibility of max. max.
Provides prevailing torque unintentional disassembly of the REF Prevents the unintentional disas- REF
screw from rear wedge. This option
Locked for resistance to loosening Lock element per adds no additional screw length sembly of screw from rear wedge.
unless from shock and vibration. MIL-F-18240 unless included with“W”option, This option adds 5.08 (.200) to
total. Adds 57 N-cm (5 in-lbs) applied to thread then 5.1 (.20) total. the screw length.
torque to assembly. See of screw locknut

application data onDperetaviiol “uRs” cut away view of spring
sheet. rear wedge
Reduces the
possibility of unintentional
disassembly of the screw from rear wedge.
This option adds 2.5 (.10) to the screw length
unless combined with the “W” pre x option, Assembly Length ± 0.76 (.03)
then 5.1 (.20) total. Two holes standard. Extra hole
added with“E”option.

7.6
(.30)
3.96 (.156) Hex Socket Cap Per ANSI/ max. Mounting holes shown in wedge body –
ASME B18.3 Screw hidden for clarity

Center hole location

11.70 (.460) max. “E”option only
M/2
± .13 (.005)

12.70 Detail “K” uninten4.t8io(.1n9a) l disa2s4s.1e3m(.9b50l)y±o.7f6 (.035) M = Assembly Length minus Units: mm (in.)
(.500) Prevents the 48.26 (1.90) ± .13 (.005) Unless otherwise specified:
screw from rear wedge. This option adds 5.1 .xx ± .25, .x ±.5
(.20) to the screw length. Screw length equal to assembly length plus (.xxx ± .010, .xx ± .02)
.20”min in increments of .10” Note: Each piece has a tolerance of ± .010
10.16
(.400) (example: an assembly length of 4.85” 5.1 (.20) max. screw advancement
max. would use a screw length of 5.10”) if visual lock option 9.4 (.37)

15.24 (.600) min. locknut
cut away view of rear spring
wedge and captive nut

Part Number Code M W V A 255 - 3.80 E H L R Part Number Code Example:
Series 255 Card-Lok Three Piece VA255CR4.80HR
Prefix options Series 255 Card-Lok three piece 121.9 (4.80) long with Visual Indicator,
black anodized finish, standard rivet mounting hole and stainless steel lock
Metric Screw Head M4 Hex Drive_____________ M nut option
Standard Screw Head 5/32 Hex Drive________ [blank]

Lock and Flat Washer ________________________ W Code FINISH TABLE
None _____________________________ [blank] Letter
Visual Indicator _______________________________ V [blank] Finish
No Visual Indicator ________________________ [blank] “R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
Black Anodize __________________________________ A “A” Chemical Film per Mil-DTL-5541 Class 3,
or choose from Finish Table____________________ see table “HA” Type II, Clear
“EN” Black Anodize per Mil-A-8625 Type II, Class 2
Suffix options Hard Black Anodize per Mil-A-8625 Type III, Class 2
Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
Stainless Steel Lock Nut if“CR”option is selected ___________________ CR
Standard Plated Steel Lock Nut _____________________________ “-”

Assembly length in inches. Standard lengths range from MOUNTING METHOD TABLE
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx Method
Other lengths available upon request No mounting holes
Rivet Mounting Ø3.45 (.136) hole with
Additional Center Mounting Hole _____________________________________ E Code 4.95 (.195) counterbore x 9.91 (.390) deep and 100º x 4.95
None _________________________________________________ [blank] Letter (.195) countersink
Mounting Options - holes for rivet mounting _________________________________ H [blank] 0-80 tapped hole
or choose from Mounting Option Table ______________________________ see table “H” 2-56 tapped hole
Lock Element _______________________________________________________ L “T0” M2 x 0.40 tapped hole
None_______________________________________________________ [blank] “T2” M2.5 x 0.45 tapped hole
Lock Nut _____________________________________________________________ R “TM2”
None __________________________________________________________ [blank] “TM2.5”
Captive Screw __________________________________________________________ K
None __________________________________________________________ [blank]

www.calmark.com • 800-854-7086 36

Series 260 - “Card”Lok” Retainer (Cold Plate)

Calmark offers the advance design Series
260“Card-Lok”retainer for cold plate/heat
exchanger applications. This totally unique
design incorporates design advancements
that provide increased thermal transfer, easy
insertion and lighter weight. Conforms to
DSSC 89024.

FEATURES Series 260 “Card-Lok” Retainer (cold plate) 89067591
• Maximum uniform clamping force
• Increased thermal transfer Cold Plate
• Maintains wedge and body alignment

for easy insertion
• Captivated rear wedge
• Choice of screw head style
• Dimensionally compatible with Series

225 & 245
• Lighter weight
• Design Flexibility - Special lengths,

finishes or other design options
available on request

BODIES, WEDGES & SHAFTS Recommended Gap:
Material: Board Module Assembly
thickness plus 7.62 (.300)
Aluminum alloy 6061-T6 per ASTM-B221
or AMS-QQ-A-200/8 Roll Pin
Finish:
See Part Number Code Board Module Assembly SMhoSoahrdftaubmlfoetanAmysdsbaeeeymdrbibvtleoeyterBidvooeartrsedcdrMe,wsoceddreutwoleBeodard
Wedges Assembly
SCREW, LOCK & FLAT WASHER
Screw: APPLICATION DATA
Recommended Torque 68 N-cm (6 in-lbs)
Stainless steel per ASTM-A582 If Locking Element option add 22 N-cm (2 in-lbs)
Passivated per AMS2700
or NAS1352C (depending on option)

Washer:
Stainless steel per ASTM-A240
Passivated per AMS2700

Lock Washer:
MS35338-135

WEIGHT
.95 g/cm (.085 oz/in)

Square Flatwasher
Lockwasher
Screw

37 www.calmark.com • 800-854-7086

Series 260 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX 4.57 8.9 5.8
Detail “V” (.180) (.35) (.23)
Provides visual lock
indication. 5.77 Unlocked Locked
(.227)
OPTION SUFFIX

Detail “L” Detail “K”
Provides prevailing torque Prevents the unintentional
for resistance to loosening Lock element per disassembly of screw from front slotted shaft
from shock and vibration. MIL-F-18240 wedge.
Adds 22 N-cm (2 in-lbs) applied to thread of screw
torque to assembly. See cut away view of front wedge
application data on previous slotted screw
sheet.

2.38 (.094) Hex Socket Cap Per ANSI/ Center hole location
ASME B18.3 “E”option only
6.86 (.270) max.
6.35 M/2
(.250) ± .13 (.005)

4.6 (.18) REF M = Assembly Length 20.32 (.800)
minus 4±8..2163 ((1.0.9005))

Assembly Length ± 1.3 (.050)

7.6 (.300) max.

8.26 (.325) min.

Two holes standard. Extra hole
added with“E”option.

Units: mm (in.)
Unless otherwise specified:
.xx ± .25, .x ±.5
(.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010

Part Number Code 3.80 E H L K Part Number Code Example:
Series 260 Card-Lok Five Piece MVA260-3.80ET2LK
Series 260 Card-Lok five piece 96.52 (3.80) long black anodized with M2.5
M V A 260 - hex drive, visual indicator, three mounting holes tapped for 2-56 thread,
Prefix options locking element and captive screw feature

Metric Screw Head M2.5 Hex Drive _____________ M
Standard Screw Head 3/32 Hex Drive________ [blank]

Visual Indicator ____________________________ V Code FINISH TABLE
No Visual Indicator _____________________ [blank] Letter
[blank] Finish
Black Anodize ________________________________ A “R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
or choose from Finish Table _________________ see table Chemical Film per Mil-DTL-5541 Class 3,
“A” Type II, Clear
Suffix options “HA” Black Anodize per Mil-A-8625 Type II, Class 2
Assembly length in inches. Standard lengths range from “EN” Hard Black Anodize per Mil-A-8625 Type III, Class 2
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
Other lengths available upon request
Additional Center Mounting Hole _____________________________________ E
None _________________________________________________ [blank]

Mounting Options - through mounting holes_________________________________ H Code MOUNTING METHOD TABLE
or choose from Mounting Option Table ______________________________ see table Letter
Lock Element _______________________________________________________ L “H” Method
None_______________________________________________________ [blank] Ø1.73/1.85 (.068/.073) dia. through holes countersink
Captive Screw __________________________________________________________ K “T0” 100° x 1.50 (.060) deep
None __________________________________________________________ [blank] “T2” 0-80 tapped hole
“TM2” 2-56 tapped hole
“TM2.5” M2 x 0.40 tapped hole
M2.5 x 0.45 tapped hole

www.calmark.com • 800-854-7086 38

Series L260 - “Card-Lok” Retainer (Lever-Lok)

Calmark offers the Series L260 Lever-Lok
“Card-Lok”retainer for cold plate/heat
exchanger applications. This totally unique
design provides tool free, lever action locking
on the advance design Series 260 Card-Lok.
The Series L260 provides visual indication
of accurate, repeatable locking to a preset
clamping force.

FEATURES Series L260 “Card-Lok” Retainer (lever-lok)
• Tool-free actuation
• Visual indication of locked or unlocked

status
• Preset and adjustable clamping force
• Clamping force consistently repeated
• Maintains wedge and body alignment

for easy installation
• Design Flexibility - Special lengths,

finishes, or other design options
available on request

MATERIALS & FINISHES Cold Plate

WEDGE, BODY, SHAFT & LEVER 89067604
Material:
Recommended Gap:
Aluminum alloy 6061-T6 per ASTM-B221 or Board Module Assembly
AMS-QQ-A-200/8 thickness plus 7.62 (.300)

Finish:
Wedge, Body, Shaft & Lever: Black Anodize per
MIL-A-8625, Type II, Class 2.
Wedges: also have Dry Film Lube per
MIL-PRF-46010
Lever: Hard Black Anodize per MIL-A-8625,
Type III, Class 2

ADJUSTMENT SCREW Board Module Assembly
Material:
Adjustment Screw
Stainless Steel per ASTM-A582\QQ-S-763 Belleville Washer Stack
Finish: Square Flatwasher

Passivate per AMS2700 Wedges
Shaft screwed to
HARDWARE Lever Arm Board Module Assembly
Material:
Square Flat Washer
Front Washer: MPIF Standard 35
Rear Washer: ASTM-A240
Belleville Washers: ASTM-A666
Finish:
Passivate per Mil-S-5002

WEIGHT
1.17 g/cm (.105 oz/in)

39 www.calmark.com • 800-854-7086

Series L260 - “Card-Lok” Retainer (Lever-Lok)

Lever width .270 Assembly Length (AL) ± 1.3 (.050) 6.35 (.250)
(6.86) Max
Assembly Length +26.4 (1.04) REF when fully relaxed and unadjusted. 6.86
2.67 (.105) Dimension will shorten by approximately 5.3 (.21) when adjusted. (.270)
Capable of expansion max.
range of 6.86 (.270) to M/2 ± .13 (.005) 2.38 (.094) Hex
8.26 (.325). Adjustment Socket Cap Per
required to an exact ANSI/ASME B18.3
dimension within this
range. 33.15 (1.305)

1.5 (.06) REF
7.04 (.277)

3.63 (1.43) M = Assembly Length
minus 48.26 (1.90) ± .13 (.005)
-1 Shown Units: mm (in.)
-2 Opposite Unless otherwise specified:
.xx ± .25, .x ±.5
(.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010

CLAMPING FORCE ADJUSTMENT CLAMPING FORCE DATA
PROCEDURE Direct force of assembly is approximately
556N (125lbs), when adjusted per rec-
Lever-Lok is furnished unadjusted and will require ommended procedure.
the use of the following procedure to achieve Direct force of assembly is affected ap-
proper clamping. proximately as follows: 26.7N (6lbs) per
each .025 (.001) variation of cold plate slot
NOTE: Factory preset adjustment available on width, or 169N (38lbs) per each full turn
request. (See part number code) of screw.
1. Fasten Lever-Lok to Board Module

Assembly
2. Insert Board Module Assembly into

slot in cold plate
3. Actuate lever to locked/closed position

4. Tighten screw on end of shaft until wedges
initially contact wall of cold plate slot, or
slight insertion extraction drag is felt

5. Additionally tighten screw
2 full turns.
DO NOT EXCEED TWO (2) TURNS
6. Lever-Lok is now ready to use
Note: Factory adjustment of clamping force available on request. See P and P2 suffix option in Part Number Code table.

Part Number Code L260 - 3.80 TM2 -1 P Part Number Code Example:
Series L260 Card-Lok Five Piece L260-3.80TM2-1
Series L260 five piece lever actuated Card-Lok 96.52 (3.80) long with
Suffix options black anodized finish, -1 lever direction and no factory preset clamping
load
Assembly length in inches. Standard lengths range from
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80) ___________________ length.xx Code MOUNTING METHOD TABLE
Other lengths available upon request Letter
Mounting Options - M2 x 0.40 tapped holes ______________________________ TM2 Method
or choose from Mounting Option Table _____________________________ see table [blank] 2-56 tapped hole
Lever Direction _______________________________________________________ -1 “TM2” M2 x 0.40 tapped hole
“TM2.5” M2.5 x 0.45 tapped hole
_______________________________________________________________ -2

Factory Preset clamping force when expanded to 7.63 (.300)
556N (125lbs)_____________________________________________________________ P
645N (145lbs) ___________________________________________________________ P2
None _____________________________________________________________ [blank]

www.calmark.com • 800-854-7086 40

Series LE260 - “Card-Lok” Retainer (Extracting/Lever-Lok)

Calmark offers the Series LE260
Extracting/Lever-Lok (“Card-Lok”) retainer for
cold plate/heat-exchanger applications. This
totally unique design provides the significant
feature of Board Module Assembly extraction
in addition to tool free lever action locking.
The Series LE260 provides visual indication
of accurate, repeatable locking to a preset
clamping force.

FEATURES Series LE260 “Card-Lok” Retainer (extracting/lever-lok)
• Safe and easy Board Module Assembly

extraction with 4:1 mechanical
advantage
• Tool-free actuation
• Visual indication of locked or unlocked
status
• Preset and adjustable clamping force
• Clamping force consistently repeated
• Maintains wedge and body alignment
for easy installation
• Design Flexibility - Special lengths,
finishes, or other design options
available on request

MATERIALS & FINISHES Cold Plate 89067606

WEDGE, BODY, SHAFT & LEVER Board Module Assembly Recommended Gap:
Material: Lever Arm Board Module Assembly
thickness plus 7.62 (.300)
Aluminum alloy 6061-T6 per ASTM-B221 or
AMS-QQ-A-200/8 Adjustment Screw
Belleville Washer Stack
Finish: Square Flatwasher
Wedge & Shaft: Black Anodize per MIL-A-8625,
Type II, Class 2 Wedges
Wedges: also have Dry Film Lube per
MIL-PRF-46010 Shaft may be screwed to
Lever: Hard Black Anodize per MIL-A-8625, Board Module Assembly
Type III, Class 2 Square Flat Washer

ADJUSTMENT SCREW
Material:

Stainless steel per ASTM-A582 or AMS-QQ-S-763
Finish:

Passivate per AMS2700

HARDWARE
Material:

Front Washer: MPIF Standard 35
Rear Washer: ASTM-A240
Belleville Washers: ASTM-A266
Finish:
Passivate per Mil-S-5002

WEIGHT
1.17 g/cm (.105 oz/in)

41 www.calmark.com • 800-854-7086

Series LE260 - “Card-Lok” Retainer (Extracting/Lever-Lok)

Lever width .270 Assembly Length ± 1.3 (.050) 6.35 (.250)
(6.86) Max Assembly Length + 16.5 (.65) when fully relaxed and unadjusted.
Dimension will shorten by approximately 5.3 (.21) when adjusted. 6.86
2.67 (.105) (.270)
2.38 (.094) Hex Socket max.
Capable of expansion Cap Per ANSI/ASME B18.3
range of 6.86 (.270) to
8.26 (.325). Adjustment Center hole location
required to an exact
dimension within this 33.15 (1.305) M/2 ± .13 (.005)
range.

4.95 (.195) Ref.

36.32 (1.43) M = Assembly Length 89104360
13.39 (.527) minus 48.26 (1.90) ± .13 (.005) Units: mm (in.)
-1 Shown Unless otherwise speci ed:
-2 Opposite .xx ± .25, .x ±.5
(.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010

CLAMPING FORCE ADJUSTMENT CLAMPING FORCE DATA
PROCEDURE Direct force of assembly is approximately 556N
(125lbs), when adjusted per recommended
Lever-Lok furnished assembled with procedure.
spring stack preloaded but not adjusted.
1. Fasten Lever-Lok to Board Module Direct force of assembly is affected ap-
proximately as follows: 26.7N (6lbs) per
Assembly each .025 (.001) variation of cold plate slot
2. Insert Board Module Assembly into slot in width, or 169N (38lbs) per each full turn
of screw.
cold plate
3. Actuate lever to locked/closed position
4. Tighten screw on end of shaft until wedges

initially contact wall of cold plate slot, or
slight insertion extraction drag is felt
5. Additionally tighten locknut two full turns.
DO NOT EXCEED TWO (2) TURNS.
6. Lever-Lok is now ready to use

NOTE: Factory adjustment of clamping
force available on request. See part
number code.

Part Number Code LE260 - 3.80 T0 -1 P Part Number Code Example:
Series LE260 Card-Lok Five Piece LE260-2.80TM2-1P2
Series LE260 five piece lever actuated Card-Lok with extractor feature,
Suffix options 71.12 (2.80) long with M2 x .40 tapped mounting holes, -1 lever direc-
tion and factory preset for 645N (145lbs) clamping force when expanded
Assembly length in inches. Standard lengths range from to .300 DIM
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx
Other lengths available upon request MOUNTING METHOD TABLE

Mounting Options - 0-80 tapped holes ___________________________________ T0 Code Method
or choose from Mounting Option Table ______________________________ see table Letter 2-56 tapped hole
Lever Direction _______________________________________________________ -1 [blank] 0-80 tapped hole
“T0” M2 x 0.40 tapped hole
_______________________________________________________________ -2 “TM2” M2.5 x 0.45 tapped hole
“TM2.5”
Factory Preset clamping force when expanded to 7.62 (.300)
556N (125lbs)_____________________________________________________________ P
645N (145lbs) ___________________________________________________________ P2
None _____________________________________________________________ [blank]

www.calmark.com • 800-854-7086 42

Series 261 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the Series 261“Card-Lok” Series 261 “Card-Lok” Retainer (cold plate)
Retainer for cold-plate, heat exchanger
applications.

FEATURES
• Maximum uniform clamping force
• Increased thermal transfer
• Maintains wedge and body alignment

for easy installation
• Captivated rear wedge
• Choice of screw head style
• Lighter weight
• Design Flexibility - Special lengths,

finishes, or other design options
available on request

WEDGES, BODY & SHAFT Cold Plate 89067626
Material: Board Module Assembly
Recommended Gap:
Aluminum alloy 6061-T6 per ASTM-B221 or Board Module Assembly
AMS-QQ-A-200/8 thickness plus 7.62 (.300)
Finish:
See Finish Table Roll Pin
Shaft may be riveted or
SCREW, LOCK & FLAT WASHER screwed to Board Module
Material: Assembly

300 Series Stainless Steel
Finish:

Passivate per Mil-S-5002

ROLL PIN
Material:

MS39086-125
Finish:

Passivate per Mil-S-5002

WEIGHT
.95 g/cm (.085 oz/in)

Wedges

APPLICATION DATA
Recommended Torque 68 N-cm (6 in-lbs)
If Locking Element option add 22 N-cm (2 in-lbs)

Square Flatwasher
Lockwasher
Screw

43 www.calmark.com • 800-854-7086

Series 261 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX 4.57 8.9 5.8
(.180) (.35) (.23)
Detail “V” REF
Provides visual lock Locked
indication. Unlocked
5.77
OPTION SUFFIX (.227) Detail “K”
Detail “L” Prevents the unintentional disassem-
Provides prevailing torque Lock element per bly of screw from front wedge.
for resistance to loosening MIL-F-18240
from shock and vibration. applied to thread of screw cut away view of front wedge slotted shaft
Adds 22 N-cm (2 in-lbs)
torque to assembly. See slotted screw
application data on previous
sheet.

2.38 (.094) Hex Socket Cap Per ANSI/ 4.6 (.18) REF Center hole location
ASME B18.3 “E”option only
6.86 (.270) max. M/2 20.32 (.800)
6.35 ± .13 (.005)
(.250)
M = Assembly Length
minus 48.26 (1.90)

± .13 (.005)
Assembly Length ± 0.76 (.030)

7.6 (.30) max.

8.26 (.325) min.

Two holes standard. Extra hole
added with“E”option.

Units: mm (in.)
Unless otherwise specified:
.xx ± .25, .x ±.5
(.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010

Part Number Code M V A 261 - 3.80 E H L K Part Number Code Example:
Series 261 Card-Lok Three Piece MVA261-3.80H
Prefix options Series 261 Card-Lok three piece 96.52 (3.80) long with M2.5 socket head screw,
visual indicator, black anodize finish and standard rivet mounting hole

Metric Screw Head M2.5 Hex Drive _______________ M Code FINISH TABLE
Standard Screw Head 3/32 Hex Drive _________ [blank] Letter
Visual Indicator ______________________________ V [blank] Finish
No Visual Indicator _______________________ [blank] “R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
Chemical Film per Mil-DTL-5541 Class 3,
Black Anodize __________________________________ A “A” Type II, Clear
or choose from Finish Table____________________ see table “HA” Black Anodize per Mil-A-8625 Type II, Class 2
“EN” Hard Black Anodize per Mil-A-8625 Type III, Class 2
Suffix options Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright

Assembly length in inches. Standard lengths range from
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx
Other lengths available upon request
Additional Center Mounting Hole _____________________________________ E
None_________________________________________________ [blank]

Mounting Options - Through mounting holes _________________________________ H Code MOUNTING METHOD TABLE
or choose from Mounting Option Table ______________________________ see table Letter
Lock Element_______________________________________________________ L “H” Method
None ______________________________________________________ [blank] Ø1.73/1.85 (.068/.073) dia. through holes countersink 100°
Captive Screw _________________________________________________________ K “T0” x 1.50 (.060) deep
None _________________________________________________________ [blank] “T2” 0-80 tapped hole
“TM2” 2-56 tapped hole
“TM2.5” M2 x 0.40 tapped hole
M2.5 x 0.45 tapped hole

www.calmark.com • 800-854-7086 44

Series 263 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the Series 263“Card-Lok” Series 263 “Card-Lok” Retainer (cold plate)
Retainer for cold-plate, heat exchanger
applications. This“Card-Lok”configuration
offers a larger cross sectional profile for
increased clamping force and thermal
transfer.

FEATURES
• Maximum uniform clamping force
• Increased thermal transfer
• Maintains wedge and body alignment

for easy installation
• Captivated rear wedge
• Choice of screw head style
• Lighter weight
• Lower cost - faster delivery
• Design Flexibility - Special lengths,

finishes, or other design options
available on request

WEDGES, BODIES & SHAFT Cold Plate 89067633
Material:
Board Module Assembly Recommended Gap:
Aluminum alloy 6061-T6 per ASTM-B221 or Board Module Assembly
AMS-QQ-A-200/8 Square Flatwasher thickness plus 8.25 (.325)
Finish: Lockwasher
See Finish Table Screw Roll Pin
Shaft may be riveted or
SCREW screwed to Board
Material: Module Assembly

NAS1352C, Modified NAS1352C04 or Wedges
18-8 stainless steel
Finish: APPLICATION DATA
Passivate per Mil-S-5002 Recommended Torque 68 N-cm (6 in-lbs)
If Locking Element option add 22 N-cm (2 in-lbs)
LOCK WASHER
Material:

MS35338-135
Finish:

Passivate per Mil-S-5002

FLAT WASHER
Material:

300 Series Stainless Steel
Finish:

Passivate per Mil-S-5002

ROLL PIN
Material:

400 Series Stainless Steel
Finish:

Passivate per Mil-S-5002

WEIGHT
1.07 g/cm (.096 oz/in)

45 www.calmark.com • 800-854-7086

Series 263 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX 4.57 8.9 5.8
(.180) (.35) (.23)
Detail “V” REF
Provides visual lock Locked
indication. 5.77 Unlocked
(.227)

OPTION SUFFIX
Detail “L”
Provides prevailing torque Detail “K”
for resistance to loosening Prevents the unintentional disassem-
from shock and vibration. bly of screw from front wedge.
Adds 22 N-cm (2 in-lbs) Lock element per
torque to assembly. See MIL-F-18240 cut away view of front wedge slotted shaft
applied to thread of screw
slotted screw
application data on previous
sheet.

2.38 (.094) Hex Socket Cap Per Center hole location
ANSI/ASME B18.3 “E”option only

M/2
± .13 (.005)

7.4 (.293) max. 4.6 (.18) REF M = Assembly Length
6.35 minus 48.26 (1.90) ± .13 (.005)
(.250) 20.32 (.800)
Assembly Length ± 1.3 (.050)

7.6 (.30) max.

8.26 (.350) min.

Two holes standard. Extra hole Units: mm (in.)
added with“E”option. Unless otherwise specified:
.xx ± .25, .x ±.5
(.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010

Part Number Code M V A 263 - 3.80 E H L K Part Number Code Example:
Series 263 Card-Lok Five Piece V263-3.80ET0K
Prefix options Series 263 Card-Lok five piece 96.52 (3.80) long with M3 socket head screw,
visual indicator, gold chemical finish, 0-80 tapped mounting holes with an
Metric Screw Head M2.5 Hex Drive ______________ M additional center mounting hole and a captive screw option
Standard Screw Head 3/32 Hex Drive ________ [blank]

Visual Indicator ____________________________ V Code FINISH TABLE
No Visual Indicator _____________________ [blank] Letter
[blank] Finish
Black Anodize _______________________________ A “R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
or choose from Finish Table _________________ see table Chemical Film per Mil-DTL-5541 Class 3,
“A” Type II, Clear
Suffix options “HA” Black Anodize per Mil-A-8625 Type II, Class 2
“EN” Hard Black Anodize per Mil-A-8625 Type III, Class 2
Assembly length in inches. Standard lengths range from Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx
Other lengths available upon request

Additional Center Mounting Hole _____________________________________ E
None _________________________________________________ [blank]

Mounting Options - through mounting holes_________________________________ H Code MOUNTING METHOD TABLE
or choose from Mounting Option Table ______________________________ see table Letter
Lock Element _______________________________________________________ L “H” Method
None_______________________________________________________ [blank] Ø1.73/1.85 (.068/.073) dia. through holes
“T0” countersink 100° x 1.50 (.060) deep
Captive Screw __________________________________________________________ K “T2” 0-80 tapped hole
None __________________________________________________________ [blank] “TM2” 2-56 tapped hole
“TM2.5” M2 x 0.40 tapped hole
M2.5 x 0.45 tapped hole

www.calmark.com • 800-854-7086 46

Series 264 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the Series 264“Card-Lok” Series 264 “Card-Lok” Retainer (cold plate)
Retainer for cold-plate, heat exchanger
applications. This“Card-Lok”configuration
offers a larger cross sectional profile for
increased clamping force and thermal
transfer.

FEATURES
• Maximum uniform clamping force
• Increased thermal transfer
• Maintains wedge and body alignment

for easy installation
• Captivated rear wedge
• Choice of screw head style
• Lighter weight
• Lower cost - faster delivery
• Design Flexibility - Special lengths,

finishes, or other design options
available on request

WEDGES, BODIES & SHAFT Cold Plate 89067636
Material: Board Module Assembly
Recommended Gap:
Aluminum alloy 6061-T6 per ASTM-B221 or Board Module Assembly
AMS-QQ-A-200/8 thickness plus 8.25 (.325)
Finish:
See Part Number Code Roll Pin
Shaft may be riveted or
SCREW screwed to Board
Material: Module Assembly

NAS1352C, Modified NAS1352C04 or Wedges
18-8 stainless steel, Stainless steel per
ASTM-A582
Finish:
Passivate per Mil-S-5002

LOCK WASHER
Material:

MS35338-135
Finish:

Passivate per Mil-S-5002

FLAT WASHER
Material:

300 Series Stainless Steel
Finish:

Passivate per Mil-S-5002

ROLL PIN
Material:

400 Series Stainless Steel

Finish:
Passivate per Mil-S-5002

WEIGHT
1.07 g/cm (.096 oz/in)

Square Flatwasher APPLICATION DATA
Lockwasher Recommended Torque 68 N-cm (6 in-lbs)
Screw If Locking Element option add 22 N-cm (2 in-lbs)

47 www.calmark.com • 800-854-7086

Series 264 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX 4.57 8.9 5.8
(.180) (.35) (.23)
Detail “V” REF
Provides visual lock Locked
indication. 5.77 Unlocked
(.227)

OPTION SUFFIX
Detail “L”
Provides prevailing torque Detail “K”
for resistance to loosening Prevents the unintentional disassem-
from shock and vibration. bly of screw from front wedge.
Adds 22 N-cm (2 in-lbs) Lock element per
torque to assembly. See MIL-F-18240 cut away view of front wedge slotted shaft
applied to thread of screw
slotted screw
application data on previous
sheet.

2.38 (.094) Hex Socket Cap Per 4.6 (.18) REF Center hole location 20.32 (.800)
ANSI/ASME B18.3 “E”option only
M/2
7.44 (.293) max. ± .13 (.005)
6.35
(.250) M = Assembly Length
minus 48.26 (1.90)

± .13 (.005)
Assembly Length +/- 1.76 (.030)

7.6 (.30) max.

8.89 (.350) min.

Two holes standard. Extra hole
added with“E”option.

Units: mm (in.)
Unless otherwise specified:
.xx ± .25, .x ±.5
(.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010

Part Number Code M V A 264 - 3.80 E H L K Part Number Code Example:
Series 264 Card-Lok Three Piece M264-2.80T2LK
Prefix options Series 264 Card-Lok three piece 71.12 (2.80) long with .094-in. hex drive,
chemical film finish, 2-56 mounting holes, lock element and captive screw.

Metric Screw Head M2.5 Hex Drive _______________ M Code FINISH TABLE
Standard Screw Head 3/32 Hex Drive _________ [blank] Letter
[blank] Finish
Visual Indicator ______________________________ V “R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
No Visual Indicator _______________________ [blank] Chemical Film per Mil-DTL-5541 Class 3,
“A” Type II, Clear
Black Anodize __________________________________ A “HA” Black Anodize per Mil-A-8625 Type II, Class 2
or choose from Finish Table____________________ see table “EN” Hard Black Anodize per Mil-A-8625 Type III, Class 2
Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
Suffix options

Assembly length in inches. Standard lengths range from
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx
Other lengths available upon request
Additional Center Mounting Hole _____________________________________ E
None _________________________________________________ [blank]

Mounting Options - holes for rivet mounting _________________________________ H Code MOUNTING METHOD TABLE
or choose from Mounting Option Table ______________________________ see table Letter
Lock Element _______________________________________________________ L “H” Method
None _______________________________________________________ [blank] Ø1.73/1.85 (.068/.073) dia. through holes countersink 100°
“T0” x 1.52 (.060) deep
Captive Screw _________________________________________________________ K “T2” 0-80 tapped hole
None __________________________________________________________ [blank] “TM2” 2-56 tapped hole
“TM2.5” M2 x 0.40 tapped hole
M2.5 x 0.45 tapped hole

www.calmark.com • 800-854-7086 48

Series 265 - “Card-Lok” Retainer (Cold Plate)

Calmark offers the narrow, advance design
Series 265“Card-Lok”retainer for cold
plate/heat exchanger applications. This
totally unique design incorporates design
advancements that provide increased
thermal transfer, easy insertion, lighter
weight and now closer center to center board
spacing.

FEATURES Series 265 “Card-Lok” Retainer (cold plate) 89067667
• Narrow design permits closer board
Cold Plate
spacing
• Maximum uniform clamping force
• Increased thermal transfer
• Maintains wedge and body alignment

for easy installation
• Captivated rear wedge
• Choice of screw head style
• Lighter weight
• Lower cost - faster delivery
• Design Flexibility - Special lengths,

finishes, or other design options
available on request

WEDGES, BODIES & SHAFT Recommended Gap:
Material: Board Module Assembly
thickness plus 6.35 (.250)
Wedges: Aluminum alloy 6061-T6 per
ASTM-B221 or AMS-QQ-A-200/8 Roll Pin
Shaft: Aluminum alloy 7075-T6 per
ASTM-B221 or AMS-QQ-A-200/11 Board Module Assembly
Finish:
See Finish Table Shaft may be riveted or screwed to
BSoharadfMt modauylebAessreimvebtley d, screwed
SCREW, LOCK & FLAT WASHER or bonded to Board Module
Material: Assembly

NAS1352C, Modified NAS1352C04 or Wedges
18-8 stainless steel, Stainless steel per
ASTM-A582
Finish:
Passivate per Mil-S-5002

ROLL PIN
Material:

400 Series Stainless Steel

Finish:
Passivate per Mil-S-5002

WEIGHT
.89 g/cm (.080 oz/in)

APPLICATION DATA
Recommended Torque 68 N-cm (6 in-lbs)
If Locking Element option add 22 N-cm (2 in-lbs)

Square Flatwasher
Lockwasher

Screw

49 www.calmark.com • 800-854-7086

Series 265 - “Card-Lok” Retainer (Cold Plate)

OPTION PREFIX 4.57 8.9 5.8
(.180) (.35) (.23)
Detail “V” REF
Provides visual lock 5.77 Unlocked Locked
indication. (.227)

OPTION SUFFIX Lock element per Detail “K”
Detail “L” MIL-F-18240 Prevents the unintentional disassem-
Provides prevailing torque applied to thread of screw bly of screw from front wedge.
for resistance to loosening
from shock and vibration. cut away view of front wedge slotted shaft
Adds 22 N-cm (2 in-lbs)
torque to assembly. See slotted screw
application data on previous
sheet.

2.38 (.094) Hex Socket Cap Per ANSI/ Center hole location
ASME B18.3 “E”option only
M2
5.84 (.230) max. 4.6 (.18) REF ± .13 (.005) 20.32 (.800)
5.72
(.225) M = Assembly Length minus
48.26 (1.90)
± .13 (.005)

Assembly Length ± 1.3 (.050)

7.6 (.30) max.
7.37 (.290) min.

Two holes standard. Extra hole Units: mm (in.)
added with“E”option. Unless otherwise specified:
.xx ± .25, .x ±.5
(.xxx ± .010, .xx ± .02)
Note: Each piece has a tolerance of ± .010

Part Number Code M V A 265 - 3.80 E H L K Part Number Code Example:
Series 265 Card-Lok Five Piece M265-4.80H
Prefix options Series 265 Card-Lok five piece 121.9 (4.80) long with M2.5 hex drive, gold chemical
film finish and standard rivet hole mounting

Metric Screw Head M2.5 Hex Drive _____________ M Code FINISH TABLE
Standard Screw Head 3/32 Hex Drive ________ [blank] Letter
Visual Indicator ____________________________ V [blank] Finish
No Visual Indicator _____________________ [blank] “R” Chemical Film per Mil-DTL-5541 Class 1A, Type 1, Gold
Black Anodize _______________________________ A Chemical Film per Mil-DTL-5541 Class 3,
or choose from Finish Table _________________ see table “A” Type II, Clear
“HA” Black Anodize per Mil-A-8625 Type II, Class 2
Suffix options “EN” Hard Black Anodize per Mil-A-8625 Type III, Class 2
Electroless Nickel per Mil-C-26074 Class 4, Grade B, Bright
Assembly length in inches. Standard lengths range from
71.12 (2.80), 96.52 (3.80) and 121.9 (4.80). ___________________ length.xx
Other lengths available upon request
Additional Center Mounting Hole _____________________________________ E
None _________________________________________________ [blank]

Mounting Options - through mounting holes_________________________________ H Code MOUNTING METHOD TABLE
or choose from Mounting Option Table ______________________________ see table Letter Method
Lock Element _______________________________________________________ L “H” Ø1.73/1.85 (.068/.073) dia. through holes countersink 100°
None_______________________________________________________ [blank] x 1.52 (.060) deep
Captive Screw __________________________________________________________ K “T0” 0-80 tapped hole
None __________________________________________________________ [blank] “T2” 2-56 tapped hole
“TM2” M2 x 0.40 tapped hole
“TM2.5” M2.5 x 0.45 tapped hole

www.calmark.com • 800-854-7086 50