Bolts types-etc.pdf

Standard Metric Hex Bolt Sizes and Thread Pitches

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PRINTABLE FASTENER TOOLS SERIES

(Note: Head sizes may differ fro m what is shows due to differences between metric standards) standards)

4mm x 0.7 10mm x 1.25 14mm x 2.0

5mm x 0.8

10mm x 1. 0 6mm x 1.0 14mm x 1.5

7mm x 1.0

12mm x 1.75

8mm x 1.25 16mm x 2.0 12mm x 1. 5 8mm x 1.0

10mm x 1.5

12mm x 1.25

mm

Measure length from under the head to the end of the bolt.

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10

20

30

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16mm x 1.5

40

50

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Scale Check: After printing, measure measure ruler above to ensure correct scale

60

70

80

5

90

100

6 inches Copyright © 2000-2007 Bolt Depot Inc.

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Standard Metric Machine Screw Sizes fastener shopping

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4mm x 0.7 6mm x 1.0

5mm x 0.8

For Pan Head - Measure length from under the head to the end of the sc rew.

mm

8mm x 1.25

10

20

30

40

50

60

70

80

90

100

For Flat H ead - Measure length from the top of the head to the end of the screw.

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Scale Check: After printing, measure ruler above to ensure correct scale

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Fastener Type Chart

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Fastener Categories

Wood Screws

Machine Screws

Screws with a smooth shank and tapered point for use in wood. Abbreviated WS

Screws with threads for use with a nut or tapped hole. Abbreviated MS

Machine screws with a thread cutting (self tapping) point.

Fully threaded screws with a point for use in sheet metal. Abbreviated SMS

Self Drilling SMS

Hex Bolts

Carriage Bolts

Lag Bolts

A sheet metal screw with a self drilling point.

Bolts with a hexagonal head with threads for use with a nut or tapped hole. Abbreviated HHMB or HXBT.

Bolts with a smooth rounded head that has a small square section underneath.

Bolts with a wood thread and pointed tip. Abbreviated Lag.

Socket Screws

Thread Cutting Machine Screws

Sheet Metal Screws

Socket screws, also known as Allen Head, are fastened with a hex Allen wrench.

Set Screws

Eye Bolts

Eye Lags

Machine screws with no head for screwing all the way into threaded holes.

A bolt with a circular ring on the head end. Used for attaching a rope or chain.

Similar to an eye bolt but with wood threads instead of machine thread.

J-Bolts

U-Bolts

Shoulder Bolts

Elevator Bolts

J shaped bolts are used for tie-downs or as an open eye bolt.

Bolts in U shape for attaching to pipe or other round surfaces. Also available with a square bend.

Shoulder bolts (also known as stripper bolts) are used to create a pivot point.

Elevator bolts are often used in conveyor systems. They have a large, flat head.

Copyright © 2000-2010 Bolt Depot Inc.

Fastener Type Chart

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Fastener Categories

Sex Bolts Sex bolts (a.k.a. barrel nuts or Chicago bolts) have a female thread and are used for through bolting applications where a head is desired on both sides of the joint.

Mating Screws Mating screws have a shoulder that matches the diameter of the sex bolts they are used with.

(continued)

Hanger Bolts Hanger bolts have wood thread on one end and machine thread on the other end

Head Styles

Flat

Oval

Pan

Truss

A countersunk head with a flat top. Abbreviated FH

A countersunk head with a rounded top. Abbreviated OH or OV

A slightly rounded head with short vertical sides. Abbreviated PN

An extra wide head with a rounded top.

Round

Hex

Hex Washer

Slotted Hex Washer

A domed head. Abbreviated RH

A hexagonal head Abbreviated HH or HX

A hex head with built in washer.

A hex head with built in washer and a slot.

Socket Cap

Button

A small cylindrical head using a socket drive.

A low-profile rounded head using a socket drive.


Fastener Type Chart

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Drive Types

Phillips and Frearson

Slotted

Combination

Socket, Hex or Allen

An X-shaped drive. Abbreviated PH

A slot in the head. Abbreviated SL

A combination of slotted and Phillips drives. Abbreviated combo

A hexagonal hole for use with an Allen wrench.

One Way

Square

Torx

Installs with a normal slotted driver but can not be removed without special tools.

Also known as Robertson drive. Abbreviated SQ or SD.

A six-pointed star pattern, specifically designed to prevent cam-out and stripped heads.

Washer Types

Flat

Fender

Finishing

Split Lock

A flat washer, used to distribute load. Available in SAE, USS and other patterns.

An oversize flat washer used to further distribute load especially on soft materials.

A washer used to obtain a ‘finished’ look. Usually used with oval head screws.

The most common style of washer used to prevent nuts and bolts from backing out.

External Tooth Lock

Internal Tooth Lock

Square

Dock

A washer with external ‘teeth’. Used to prevent nuts and bolts from backing out.

A washer with internal ‘teeth’. Used to prevent nuts and bolts from backing out.

A square shaped washer.

Dock washers have a larger outside diameter and are thicker than standard.

Ogee Thick, large diameter, cast iron washers with a curved or sculpted appearance. Typically used in dock and wood construction.


Fastener Type Chart

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Nut Types

Hex

Heavy Hex

Nylon Insert Lock

Jam

A six sided nut. Also referred to as a Finished Hex Nut.

A heavier pattern version of a standard hex nut.

A nut with a nylon insert to prevent backing off. Also referred to as a Nylock.

A hex nut with a reduced height.

Nylon Insert Jam Lock

Wing

Cap

Acorn

A nylock nut with a reduced height.

A nut with ‘wings’ for hand tightening.

A nut with a domed top over the end of the fastener.

Acorn nuts are a high crown type of cap nut, used for appearance.

Flange

Tee

Square

Prevailing Torque Lock

A nut with a built in washer like flange.

A nut designed to be driven into wood to create a threaded hole.

A four sided nut.

A non-reversible lock nut used for high temperature applications.

K-Lock or Kep

Coupling

Slotted

Castle

A nut with an attached free-spinning external tooth lock washer.

Coupling nuts are long nuts used to connect pieces of threaded rod or other male fasteners.

Slotted nuts are used in conjunction with a cotter pin on drilled shank fasteners to prevent loosening.

Castle nuts are used in conjunction with a cotter pin on drilled shank fasteners to prevent loosening.


US and Metric Thread Sizes

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US Thread Sizes

Metric Thread Pitches

7 tpi

2.5 mm

8 tpi

2.0 mm

9 tpi

1.75 mm

10 tpi

1.5 mm

11 tpi

1.25 mm

12 tpi

1.0 mm

13 tpi

0.8 mm

14 tpi

0.7 mm

16 tpi

18 tpi

20 tpi

24 tpi

28 tpi

32 tpi

40 tpi

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Standard US Hex Bolt Sizes and Thread Pitches

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Coarse Thread

Fine Thread

1/4 - 20

1/4 - 28

5/16 - 18

5/16 - 24

3/8 - 16

3/8 - 24

7/16 - 14

7/16 - 20

1/2 - 13

1/2 - 20

9/16 - 12

9/16 - 18

5/8 -11

5/8 - 18

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3

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Standard US Machine Screw Sizes

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4 - 40

12 - 24

6 - 32 1/4 - 20

8 - 32

5/16 - 18

10 - 32

3/8 - 16

10 - 24

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Bolts types-etc.pdf

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