Printable-Fastener-Tools

Fastener Basics

Common Fastener Types Fastener Materials

Hex bolts, or hex cap screws, are used in Note: Do not rely on this guide for color-matching. The
machinery and construction. Can be used with a appearance of these materials sometimes differs signifi-
nut, or in a tapped hole. Fully threaded hex bolts cantly from the photos below.
are also known as tap bolts.
Zinc-plated steel is a
Wood screws have large threads and a smooth low carbon steel for
shank f or pulling two pieces of material together. general use. Relatively
They can be used in wood and other soft materi- inexpensive, with the
als. zinc plating providing
moderate corrosion
Sheet metal screws have sharp points and resistance suitable for
threads, and are designed to be driven directly indoors or otherwise
into sheet metal. They can also be used in softer dry conditions. Color is
materials like plastic, fiberglass, or wood. either a blue-ish tint or
yellow depending on the exact process.
Machine screws are fully threaded for use with a
nut or in a tapped hole. Certain types are some- Hot-dipped galvanized
times referred to as stove bolts. steel has a thicker zinc
coating for better
Socket screws are machine screws with an corrosion resistance,
internal hex socket (Allen) drive. Longer lengths making it suitable for
may have a smooth shank. outdoor use. Because
of the thick plating,
Lag bolts, or lag screws, are large wood screws only galvanized nuts and washers will fit
with hex heads. Typically used for wood galvanized bolts. The coating typically has a
construction. rough, dull grey finish.

Carriage bolts have smooth, domed heads with Stainless steel offers
a square section underneath that pulls into the good corrosion
material to prevent spinning during installation. resistance, making it
suitable for outdoor
Nuts are used to fasten machine threaded use and marine
fasteners in through-hole applications. Lock nuts applications, but is
help prevent loosening. more expensive than zinc plated.

Washers spread the load over a greater surface Chrome and nickel
area when tightening a bolt, screw or nut. Lock plated steel are
washers help prevent loosening. smooth and polished
for appearance. The
Tip: Find a more comprehensive fastener type chart at http://boltdepot.com/info plating offers moderate corrosion resistance.

Grade/Class & Fastener Strength Brass and bronze are
copper alloys with good
Fastener Grade (US) or Class (metric) refers to the mechanical proper- corrosion resistance.
ties of the fastener material. Generally, a higher number indicates a More expensive than
steel, these materials
stronger, more hardened (but also more brittle) fastener. are typically used for
decorative applications.
For a chart of fastener grades, head markings and mechanical properties, see Colors can vary
Bolt Depot’s Grade markings and Strength Chart at http://boltdepot.com/info significantly.

US bolt head markings Metric bolt head markings Alloy steel is highly
hardened and usually
8.8 10.9 12.9 black oxide and/or oil
coated, offering little
Low Carbon Grade 5 Grade 8 Class 8.8 Class 10.9 Class 12.9 corrosion resistance.

Note: In addition to these markings, the head will often have a manufacturer stamp. Copyright © 2000-2017 Bolt Depot Inc.

Page 1

How Fasteners are Notated: An Example

Machine screws, Phillips pan head, Stainless steel 18-8, #12-24 x 1"

Fastener type Material Diameter Length
Thread Count (TPI)
Drive Types Head Styles
Measuring Diameter
Phillips Slotted Phillips and Slotted Hex heads are typically
drives are common used with larger bolts and For most
in screws, but prone screws, and tightened with a types of
to cam-out wrench. fasteners,
(stripping). Pan heads have a slightly the diameter
domed head that sits above is measured on
Combo Combo drives, that the surface. the outside of
can be used with Flat heads are installed in a the threads.
either driver, are countersunk hole for a flat
available for many surface. Note: US diameters under 1/4” are given as numbers (e.g.
fastener types. Round heads are tall domed #12) instead of inches, in order of increasing size. If you need
heads, used primarily for to find the actual diameter, use a table corresponding to your
Frearson Pozidriv Frearson and Pozidriv decorative purposes. fastener type at http://boltdepot.com/info
are similar to Phillips, Oval heads are a low
but less prone to domed and countersunk Thread Count & Thread Pitch
cam-out. heads, used primarily for
decorative purposes. Machine threaded fasteners specify a thread
Hex socket Hex socket (Allen) density in Threads Per Inch (US) or as a Thread
(Allen) drives are compact Truss heads are slightly Pitch in mm (Metric).
and easy to drive, but domed, with a wide head for For a given diameter, a fastener may be available
prone to cam-out. an extra large surface area. in coarse (standard), fine and sometimes super
Socket heads are narrow fine thread.
Star and Square drive with a socket drive, and
are resistant to knurled or smooth sides. Measuring Length
cam-out and can be Button heads feature a
Star Square installed single- medium dome. Typically Fastener length is
(Robertson) handed. used with a hex socket usually measured from
drive. where the material is
Note: Most drive types (Frearson and Slotted assumed to be to the
being notable exceptions) require the correct end of the fastener.
driver size for proper installation. Thus, countersunk
fasteners are measured
Nut & Washer Sizes overall and non-counter-
sunk fasteners are
Nut and washer sizes indicate the screw or bolt they fit. For example: measured from under the
head.

3/8”-16 Hex Bolt 3/8” Washer 3/8” -16 Nut More Information

Different washer patterns have different outside At http://boltdepot.com/info you'll find:
diameters. For example, hardened US washers are • In-depth fastener info
available in USS (wider) and SAE (narrower) • Charts and tables
patterns. Fender washers have large outside • Printable lay-over charts
diameters.
and tools for quickly
1/4” 1/4” 1/4” x 1” identifying fastener sizes
SAE USS Fender and types
Page 2 • Much more...

Copyright © 2000-2017 Bolt Depot Inc.

Fastener Type Chart

www.boltdepot.com/tools

Fastener Categories

Wood Screws Machine Screws Thread Cutting Sheet Metal Screws
Machine Screws
Screws with a smooth shank Screws with threads for use Fully threaded screws with a
Machine screws with a thread
and tapered point for use in with a nut or tapped hole. point for use in sheet metal.
cutting (self tapping) point.
wood. Abbreviated WS. Abbreviated MS. Abbreviated SMS.

Self Drilling SMS Hex Bolts Carriage Bolts Plow Bolts

A sheet metal screw with a Bolts with a hexagonal head Bolts with a smooth rounded Similar to carriage bolts but
self drilling point. with threads for use with a head that has a small square used for attaching the cutting
nut or tapped hole. Abbrevi-
section underneath. edge of a plow to the plow
ated HHMB or HXBT. blade.

Socket Screws Lag Bolts Eye Bolts Eye Lags

Socket screws, also known Bolts with a wood thread and A bolt with a circular ring on Similar to an eye bolt but with
as Allen Head, are fastened pointed tip. the head end. Used for wood threads instead of
machine thread.
with a hex Allen wrench. Abbreviated Lag. attaching a rope or chain.

J-Bolts U-Bolts Shoulder Bolts Elevator Bolts

J shaped bolts are used for Bolts in U shape for attaching Shoulder bolts (also known Elevator bolts are often used
tie-downs or as an open eye to pipe or other round as stripper bolts) are used to in conveyor systems. They
have a large, flat head.
bolt. surfaces. Also available with create a pivot point.
a square bend. Copyright © 2000-2017 Bolt Depot Inc.

Fastener Type Chart

www.boltdepot.com/tools

Fastener Categories (continued)

Sex Bolts Mating Screws Hanger Bolts Set Screws

Sex bolts (a.k.a. barrel nuts or Mating screws have a Hanger bolts have wood Machine screws with no head
Chicago bolts) have a female shoulder that matches the thread on one end and for screwing all the way into
diameter of the sex bolts machine thread on the other
thread and are used for threaded holes.
through bolting applications they are used with. end
where a head is desired on

both sides of the joint.

Timber Bolts Cotter Pins Rivets

Machine threaded fasteners Cotter or split pins have two Used to join sheets of metal.
with a wide domed head. The tines which are bent apart to During installation the rivet
body is deformed to perma-
head has fins underneath hold them in place. nently lock in place. Blind
that prevent the bolt from rivets can be installed without
spinning during installation. access to the back side of
Typically used in wood.
the material.

Head Styles

Flat Oval Pan Truss

A countersunk head with a A countersunk head with a A slightly rounded head with An extra wide head with a
flat top. rounded top. short vertical sides. rounded top.
Abbreviated PN
Abbreviated FH Abbreviated OH or OV

Round Hex Hex Washer Hex Flange

A domed head. A hexagonal head A hex head with built in A hex head with built in
Abbreviated RH Abbreviated HH or HX washer. flange.

Slotted Hex Washer Button Socket Cap

A hex head with built in A low-profile rounded head A small cylindrical head using

washer and a slot. using a socket drive. a socket drive.

Copyright © 2000-2017 Bolt Depot Inc.

Fastener Type Chart

www.boltdepot.com/tools

Drive Types

Phillips and Frearson Slotted Combination Socket, Hex or Allen

An X-shaped drive. A slot in the head. A combination of slotted and A hexagonal hole for use
Abbreviated PH. Abbreviated SL. Phillips drives. with an Allen wrench.

Abbreviated combo.

One Way Square Star

Installs with a normal slotted Also known as Robertson A six-pointed star pattern,
driver but can not be drive. specifically designed to
prevent cam-out and stripped
removed without special Abbreviated SQ or SD.
tools. heads.

Washer Types

Flat Fender Finishing Split Lock

A flat washer, used to An oversize flat washer used A washer used to obtain a The most common style of
distribute load. Available in to further distribute load ‘finished’ look. Usually used washer used to prevent nuts
SAE, USS and other patterns. and bolts from backing out.
especially on soft materials. with oval head screws.

External Tooth Lock Internal Tooth Lock Square Dock

A washer with external A washer with internal ‘teeth’. A square shaped washer. Dock washers have a larger
‘teeth’. Used to prevent nuts Used to prevent nuts and outside diameter and are
and bolts from backing out. bolts from backing out. thicker than standard.

Ogee Copyright © 2000-2017 Bolt Depot Inc.

Thick, large diameter, cast
iron washers with a curved or

sculpted appearance.
Typically used in dock and

wood construction.

Fastener Type Chart

www.boltdepot.com/tools

Nut Types

Hex Heavy Hex Nylon Insert Lock Jam

A six sided nut. Also referred A heavier pattern version of a A nut with a nylon insert to A hex nut with a reduced
to as a Finished Hex Nut. standard hex nut. prevent backing off. Also height.
referred to as a Nylock.

Nylon Insert Jam Lock Wing Cap Acorn

A nylock nut with a reduced A nut with ‘wings’ for hand A nut with a domed top over Acorn nuts are a high crown
height. tightening. the end of the fastener. type of cap nut, used for
appearance.

Flange Tee Square Prevailing Torque Lock

A nut with a built in washer A nut designed to be driven A four sided nut. A non-reversible lock nut
like flange. into wood to create a used for high temperature
threaded hole.
applications.

K-Lock or Kep Coupling Slotted Castle

A nut with an attached Coupling nuts are long nuts Slotted nuts are used in Castle nuts are used in
free-spinning external tooth used to connect pieces of conjunction with a cotter pin conjunction with a cotter pin
threaded rod or other male on drilled shank fasteners to on drilled shank fasteners to
lock washer.
fasteners. prevent loosening. prevent loosening.

Pin Lock

A nut that does not require
an high installation torque
and can be installed and
removed without thread

damage.

Copyright © 2000-2017 Bolt Depot Inc.

Fastener Type Chart

www.boltdepot.com/tools

Anchoring Products

Stud Anchors Sleeve Anchors Lag Shields Machine Screw Anchors

A.k.a. Wedge Anchors. One Heavy duty masonry anchors. Medium dury anchors for use A two-piece machine thread
piece expansion bolts for Does not require a solid base in concrete, brick or mortar. anchor for use in stone, brick,
heavy duty fastening into
stone or solid concrete. material for installation. Use with a lag bolt. or concrete.

Drop-in Anchors Double Expansion Sleeves Concrete Screws Spring Toggle Wings

A heavy duty machine thread Expansion anchor for Used in concrete, brick or Non-removable fasteners
anchor for concrete or stone. masonry that ensures contact block. A quick and easy way that expand behind the
along the length of the hole. to fasten in light to medium material, e.g. inside a wall, for

duty applications a secure grip.

Plastic Toggle Kaptoggle® Conical Anchors Self Drilling Drywall
Anchors
When these anchors are A non removable anchor Plastic anchors used with
driven in they expand inside commonly used for hollow sheet metal screws. Can be Quick-install plastic anchors
spaces such as drywall and used in drywall with sheet
the hole for a secure grip. used in most materials.
Drill hole the same size as masonry block. metal screws.
the anchor. Non-removable.

Wood Screw Anchors Hollow Wall Anchors Nail Drive Anchors Anchor Bolts

This anchor is made of lead A.k.a. Molly Bolts. Used for Non removable anchors that L shaped, machine threaded
and can be used with wood light duty anchoring in expand inside the hole when anchors. Typically embedded
in concrete when it is poured.
screws or sheet metal drywall or other hollow walls. the nail like pin is driven.
screws.

Copyright © 2000-2017 Bolt Depot Inc.

mm 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

US and Metric For more printable tools and charts, see
Ruler www.boltdepot.com/tools

in 1 2 3 4 5 6 7 8 9


cut or fold

IMPORTANT: Copyright © 2000-2013 Bolt Depot Inc.

Make sure to print this chart to Actual Size (no scaling).
After printing, check the ruler (e.g. against the short side of a letter size paper - 8 ½ in - or
another ruler) to ensure correct scale. See boltdepot.com/tools for more details.

US and Metric Thread Sizes Metric Thread Pitches 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

www.boltdepot.com/tools 2.5 mm thread pitch

US Thread Sizes

in

7 threads per inch

1 23456789 8 tpi 2.0 mm
9 tpi 1.75mm
10 tpi

11 tpi 1.5mm
12 tpi 1.25mm
13 tpi

14 tpi 1.0mm
16 tpi

18 tpi 0.8mm

20 tpi 0.7mm
24 tpi

28 tpi 0.5mm
32 tpi

40 tpi mm

Copyright © 2000-2017 Bolt Depot Inc.

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Sewe wbwo.lbtdoeltpdoetp.coot.mco/tmoo/tlosoflosr more details.

US Hex Bolt Sizes and Thread Pitches

www.boltdepot.com/tools

3/8” 3/8” - 16

in Length is measured from under the head Coarse thread 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230
to the end of the bolt
3/8” - 24
Length
Fine thread
#4 #4 - 40
7/16” - 14
1 23456789 Coarse thread

#6 #6 - 32

7/16”

Coarse thread

#8 #8 - 32 1/2” Coarse thread
#10
Coarse thread 7/16” - 20
1/4”
#10 - 24 Fine thread

Coarse thread 1/2” - 13

#10 - 32 Coarse thread

Fine thread 1/2” - 20

1/4” - 20

Coarse thread 9/16” Fine thread

5/16” 1/4” - 28 9/16” - 12

Fine thread Coarse thread

5/16” - 18 9/16” - 18

Coarse thread

5/16” - 24

Fine thread Fine thread

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Swewewb.booltdltdeeppoot.ct.ocomm/t/otoolslsfor more details.

US Hex Bolt Sizes and Thread Pitches (continued)

www.boltdepot.com/tools

in 7/8” 7/8” - 9 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230
5/8” - 11
5/8” Coarse thread

1 23456789 Coarse thread 7/8” - 14

5/8” - 18 Fine thread

Fine thread 1” - 8

1”
3/4”

3/4” - 10

Coarse thread Coarse thread

3/4” - 16 1” - 14

Fine thread

Fine thread

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Sewewbwo.bltodletdpeopt.octo.cmo/mto/otolsolsfor more details.

US Machine Screw Sizes

www.boltdepot.com/tools

Length is measured from where the surface is assumed to be, to 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230
in the end of the screw. Therefore, pan head screws are measured

from under the head, and flat head screws are measured overall.

Length #12 #12 - 24

#2 #2 - 56 Pan head
Flat head
1 23456789 Pan head
1/4” - 20
Flat head 1/4”
Pan head
#4 #4 - 40
Flat head
Pan head
5/16” - 18
Flat head
Pan head
#6 #6 - 32

Pan head

Flat head 5/16”

#8 #8 - 32

Pan head

#10 Flat head 3/8” Flat head
#10
#10 - 32 3/8” - 16

Pan head Pan head

Flat head

#10 - 24

Pan head

Flat head Flat head

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Seewwbwol.tbdoelptdoet.pcootm.c/otomo/ltsoofolsr more details.

1 3456789Sheet Metal Screw Sizes Length 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

www.boltdepot.com/tools Pan head
Truss head
Fastener length is measured from where the material
in surface is assumed to be, to the end of the fastener. Pan head
Truss head
Length
Pan head
#4 Truss head

Flat head Pan head
Truss head
Oval head
Pan head
#6 Truss head

Flat head Pan head

Oval head

#8

Flat head

#10 Oval head
Flat head

#12 Oval head
Flat head

#14 Oval head
Flat head

Oval head Truss head

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Seewwbowl.tbdoelptdoet.pcotm.c/otomo/ltsoofolsr more details.

US Nut Sizes Jam 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230
Hex Jam Nylock nylock
www.boltdepot.com/tools
1 23456789 N/A N/A N/A
in N/A N/A N/A
N/A N/A N/A
#0 N/A N/A N/A
N/A
5/32” wrench N/A
N/A N/A
#1 Note: Hex nuts with a

5/32” wrench N/A diameter under 1/4” are called
hex machine screw nuts
#2
N/A N/A
3/16” wrench
N/A N/A
#3
N/A
3/16” wrench
N/A N/A
#4

1/4” wrench

#5

5/16” wrench

#6

5/16” wrench

#8

11/32” wrench

#10

3/8” wrench

#12

7/16” wrench

1/4"

7/16” wrench

5/16"

1/2” wrench

3/8"

9/16” wrench

7/16"

11/16” wrench

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. See wbwowltd.beoplotdt.ecpoomt./ctooomls/tofoorlsmore details.

US Nut Sizes (continued) Hex Jam Nylock Jam 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230
nylock
www.boltdepot.com/tools
in1 23456789

1/2"

3/4” wrench

5/8"

15/16” wrench

3/4"

1-1/8” wrench

7/8”

1-5/16” wrench

1”

1-1/2” wrench

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Swewewb.booltldtdeeppoot.tc.coomm/t/otoolslsfor more details.

USS Flat Washer Sizes

www.boltdepot.com/tools

Washer sizes correspond to the screw/bolt #10 1/4" 5/16"
diameter they fit. For example, a 1/2” washer
in fits a 1/2” bolt, and therefore has an inner 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

diameter of just over 1/2”.

1 23456789 3/8" 7/16" 1/2" 9/16"

5/8" 3/4" 7/8"

Large USS Washer Sizes

Size Diameter 1"

1-1/8" Inside Outside
1-1/4"
1-3/8" 1-1/4" 2-3/4"
1-1/2"
1-5/8" 1-3/8" 3"
1-3/4"
1-1/2" 3-1/4"
2"
1-5/8" 3-1/2"
1-3/4" 3-3/4"

1-7/8" 4"

2-1/8" 4-1/2"

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Seewbwowltd.beopltodte.cpoomt./ctomol/stoforlsmore details.

SAE Flat Washer Sizes

www.boltdepot.com/tools

Washer sizes correspond to the screw/bolt diameter
they fit. For example, an 1/4” washer fits an 1/4” bolt,
in and therefore has an inner diameter of just over 1/4”. 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

1 23456789 #2 #4 #6 #8

#10 #12 1/4" 5/16" 3/8"

7/16" 1/2" 9/16" 5/8"

3/4" 7/8" 1"

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Seewbwowlt.dbeopltdoet.cpoomt.c/toomo/lstoofolsr more details.

US Socket Cap Sizes

www.boltdepot.com/tools 5/16” 5/16"-18 5/8”
3/4”
Fastener length is measured Coarse thread 7/8” 5/8"-11
from where the material
in surface is assumed to be, to 5/16"-24 Coarse thread 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

the end of the fastener. Fine thread 5/8"-18

Length 3/8"-16 Fine thread

#2 #2-56 Coarse thread 3/4"-10

1 23456789 #2-64 3/8” 3/8"-24 Coarse thread

#4 #4-40 Fine thread 3/4"-16
#4-48
7/16"-14 Fine thread
#6 #6-32 7/16”
1/2” Coarse thread 7/8"-9
Coarse thread 9/16”
7/16"-20 Coarse thread
#6-40
Fine thread
Fine thread
1/2"-13
#8 #8-32
Coarse thread
Coarse thread
1/2"-20
#8-36
Fine thread
#10 Fine thread
9/16"-12
#10-24

Coarse thread

#10-32

Fine thread

#12 #12-24

Coarse thread

#12-28

1/4” Fine thread 7/8"-14

1/4"-20 Coarse thread

9/16"-18

Coarse thread

1/4"-28

Fine thread Fine thread Fine thread

Copyright © 2000-2017 Bolt Depot Inc.

IMPORTANT: Make sure to print this chart to Actual Size (no scaling). mm
After printing, measure the ruler in the margin to ensure correct scale. Sewewbwo.lbtdoeltpdoetp.coot.mco/tmoo/tlosoflosr more details.

US Socket Cap Sizes (continued) 1-1/4”

www.boltdepot.com/tools 1-1/4"-7 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

in Coarse thread

1 23456789 1” 1-3/8"-6
1"-8
Coarse thread
Coarse thread 1-3/8”
1-1/2"-6
1"-14

Fine thread

1-1/8”

1-1/8"-7

1-1/2”

Coarse thread

Coarse thread

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Sewewbwo.lbtdoeltpdoetp.coot.mco/tmoo/tlosoflosr more details.

US Socket Flat Head Sizes

www.boltdepot.com/tools 5/16” 5/16"-18 5/8”
5/8"-11
Fastener length is measured from Coarse thread 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230
in where the material surface is Coarse thread
5/16"-24
assumed to be, to the end of the 5/8"-18
fastener.
Fine thread
#2 #2-56
7/8”
1 23456789 Coarse thread 7/8"-9

Length Fine thread Coarse thread

#4 #4-40 3/8”
3/8"-16
Coarse thread

#6 #6-32 Coarse thread

Coarse thread 3/8"-24

#8 7/16” Fine thread
#8-32
7/16"-14
Coarse thread

#10
#10-24

Coarse thread Coarse thread

#10-32 7/16"-20

Fine thread

#12 1/2” Fine thread 1”
#12-24
1/2"-13
Coarse thread
1”-8
1/4”
1/4"-20 Coarse thread

Coarse thread 1/2"-20

1/4"-28 Coarse thread

Fine thread Fine thread

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. See wbowlwtd.ebpooltdt.ceopmot/.tcooomls/tofoorlms ore details.

US Socket Button Head Sizes

www.boltdepot.com/tools

Fastener length is measured from where
the material surface is assumed to be, to
in the end of the fastener. 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

1 23456789 Length #12 3/8”
#12-24
#2 3/8"-16
#2-56 Coarse thread

Coarse thread

#4 Coarse thread
#4-40
3/8"-24
Coarse thread
1/4” Fine thread
#6 1/4"-20
#6-32 1/2”
Coarse thread 1/2"-13
Coarse thread
1/4"-28 Coarse thread
#8
#8-32 Fine thread 1/2"-20

Coarse thread 5/16” Fine thread
5/16"-18
#10
#10-24 Coarse thread

Coarse thread 5/16"-24

#10-32 Fine thread

Fine thread

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Sewe wbwo.lbtdoeltpdoetp.cootm.co/tmoo/tlosoflosr more details.

US Shoulder Bolt Sizes

www.boltdepot.com/tools 5/8”

Shoulder bolt size is determined 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230
in by the diameter and length of

the shoulder.

Length 3/4” 1/2"-13 Thread
5/8"-11 Thread
1/8” 3/4"-10 Thread

1 23456789 #4-40 Thread 7/8”-9 Thread

5/32”

#6-32 Thread 1”

3/16”

#8-32 Thread

7/32”

#8-32 Thread

1/4”

#10-24 Thread 1-1/4”

#10-32 Thread

5/16”

1/4"-20 Thread

3/8”

1-1/2”

1/4"-20 Thread

5/16"-18 Thread

1/2”

1-1/8"-7 Thread

3/8"-16 Thread mm

Copyright © 2000-2017 Bolt Depot Inc.

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Seewwbwol.tbdoelptdoet.pcootm.c/otomo/ltsoofolsr more details.

Screw Eye Sizes

www.boltdepot.com/tools

Screw eyes are sold by industry trade sizes (e.g. 112), .135” wire continued 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230
in which correspond to a specific wire diameter,
110
inside eye diameter and length.

.222” wire wire diameter
length
.120” wire
1 23456789 inside 112 10
eye diameter 213-1/2
industry .148” wire
trade size

.056” wire .105” wire 9

217-1/2 212-1/2
212
.062” wire
.160” wire
216-1/2

216
112

208-1/2

.072” wire 12 208

215-1/2 .120” wire 108

.080” wire 211 8-1/2

214-1/2 .135” wire
214
114 210-1/2

14 210 8

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Seewbwowltd.beopltodte.cpoomt./ctomol/stofolrsmore details.

Screw Eye Sizes (continued) .264” wire

www.boltdepot.com/tools 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

.192” wire

in

6

123456789 .307” wire 2
0
106

206

.331” wire

.225” wire

4 00

.365” wire

104

000
204

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Seewbwowlt.dbeopltodte.cpoomt./ctomols/toforlsmore details.

Metric Hex Bolt Diameters and Thread Pitches 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

www.boltdepot.com/tools

Length is measured from under the head to the end of the bolt
in Note: Head sizes may differ from what is shown due to differences between metric standards

Length 10mm

3mm 3mm x 0.5mm 10mm x 1.5mm

1 23456789 Coarse thread 14mm

4mm 4mm x 0.7mm Coarse thread 14mm x 2.0mm

10mm x 1.25mm Coarse thread

5mm Coarse thread Fine thread 14mm x 1.5mm

5mm x 0.8mm 10mm x 1.0mm Fine thread

Coarse thread Super fine thread 16mm x 2.0mm

6mm 6mm x 1.0mm Coarse thread

Coarse thread 16mm x 1.5mm

7mm 7mm x 1.0mm 16mm Fine thread
12mm x 1.75mm
Coarse thread 12mm

8mm Coarse thread
8mm x 1.25mm
12mm x 1.5mm
Coarse thread
Fine thread
8mm x 1.0mm
12mm x 1.25mm
Fine thread
Super fine thread

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Sweewwb.oblotdltedpeopto.cto.cmom/to/tooloslsfor more details.

Standard Metric Machine Screw Sizes 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

www.boltdepot.com/tools

Length is measured from where the surface is assumed to be, to
in the end of the screw. Therefore, pan head screws are measured

from under the head, and flat head screws are measured overall.

1 23456789 Length 6mm x 1.0mm

3mm x 0.5mm Pan head
Flat head
Pan head

Flat head

4mm x 0.7mm 8mm x 1.25mm

Pan head Pan head
Flat head Flat head

5mm x 0.8mm 10mm x 1.5mm

Pan head Pan head
Flat head
Flat head

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Sewewbwo.lbtdoeltpdoetp.coot.mco/tmoo/tlosoflosr more details.

Metric Nut Sizes

www.boltdepot.com/tools

in Hex Jam Nylock 12mm Hex Jam Nylock 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230
2mm
19mm wrench N/A
4mm wrench N/A
N/A 14mm

1 23456789 2.5mm 22mm wrench

5mm wrench 16mm

N/A 24mm wrench

3mm 18mm

5.5mm wrench 27mm wrench

4mm 20mm

7mm wrench 30mm wrench

5mm

8mm wrench

6mm

10mm wrench

7mm N/A

11mm wrench

8mm

13mm wrench

10mm

17mm wrench

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Seewbwowltd.beopltodte.cpoomt./ctomol/stoforlsmore details.

Metric Flat Washer Sizes

www.boltdepot.com/tools

Washer sizes correspond to the screw/bolt
diameter they fit. For example, an 8mm
in washer fits an 8mm bolt, and therefore has 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

an inner diameter of just over 8mm.

1 23456789 1.6 mm 2 mm 2.5 mm 3 mm 3.5 mm 4 mm

5 mm 6 mm 7 mm 8 mm 10 mm

12 mm 14 mm 16 mm 18 mm

20 mm 22 mm 24 mm

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. See wbwolwtd.beoplotdt.ecopmot/.ctooomls/tofoorlsmore details.

Metric Shoulder Bolt Sizes

www.boltdepot.com/tools

in Shoulder bolt size is determined by the diameter 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230
and length of the shoulder.

1 23456789 Length

4mm

3mm x 0.5 Thread 12mm
16mm
5mm

4mm x 0.7 Thread 10mm x 1.5 Thread
12mm x 1.75 Thread
6mm 16mm x 2.0 Thread

5mm x 0.8 Thread

8mm

6mm x 1.0 Thread

20mm

10mm

8mm x 1.25 Thread

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Sewe wbwo.lbtdoeltpdoetp.cootm.co/tmoo/tlosoflosr more details.

Metric Socket Cap Sizes

www.boltdepot.com/tools

Fastener length is measured from
where the material surface is assumed
in to be, to the end of the fastener. 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

Length 10mm 10mm x 1.5

3mm 3mm x 0.5 14mm 14mm x 2.0

1 23456789 Coarse thread Coarse thread Coarse thread

4mm 4mm x 0.7 10mm x 1.25 14mm x 1.5

Coarse thread Fine thread

5mm 10mm x 1.0 Fine thread
5mm x 0.8
Super fine thread
Coarse thread

6mm 6mm x 1.0

Coarse thread 12 mm

12mm x 1.75 16mm

16mm x 2.0

8mm 8mm x 1.25 Coarse thread

Coarse thread 12mm x 1.5 Coarse thread

8mm x 1.0 Fine thread 16mm x 1.5

Fine thread 12mm x 1.25

Fine thread

Super fine thread

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Seewwbowl.tbdoelptdoet.pcotm.c/otomo/ltsoofolsr more details.

Metric Socket Flat Head Sizes 1 23456789 10 mm 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230
10mm x 1.5
www.boltdepot.com/tools
Coarse thread
in Fastener length is measured from where the material
surface is assumed to be, to the end of the fastener. 10mm x 1.25

Length Fine thread

3 mm 10mm x 1.0
3mm x 0.5
Super fine thread
Coarse thread
12 mm
4 mm 12mm x 1.75
4mm x 0.7
Coarse thread
Coarse thread
12mm x 1.5
5 mm
5mm x 0.8 Fine thread

Coarse thread 12mm x 1.25

6 mm Super fine thread
6mm x 1.0

Coarse thread

8 mm
8mm x 1.25

Coarse thread

8mm x 1.0

Fine thread

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Sewe wbwol.tbdoeltpdoetp.cootm.co/tmoo/ltsoofolsr more details.

Metric Socket Button Head Sizes

www.boltdepot.com/tools

Fastener length is measured from where
the material surface is assumed to be, to
in the end of the fastener. 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

1 23456789 Length 10mm
10mm x 1.5
4mm
4mm x 0.7 Coarse thread

Coarse thread 10mm x 1.25

5mm Fine thread
5mm x 0.8
10mm x 1.0
Coarse thread
Super fine thread
6mm
6mm x 1.0 12mm
12mm x 1.75
Coarse thread
Coarse thread
8mm
8mm x 1.25 12mm x 1.5

Coarse thread Fine thread

8mm x 1.0 12mm x 1.25

Fine thread

Super fine thread

Copyright © 2000-2017 Bolt Depot Inc. mm

IMPORTANT: Make sure to print this chart to Actual Size (no scaling).
After printing, measure the ruler in the margin to ensure correct scale. Seewbwowltd.beopltodte.cpoomt./ctomol/stofolrsmore details.