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Printable Fastener Tools

These to-scale 'lay-over' charts let you quickly identify dimensions by simply matching up your fastener with the printout. The printable fastener tools series also includes general charts and tools for identifying and measuring fasteners, including a ruler and thread gauge.

Note: If you can't open these PDF files directly in your browser, you can use a PDF viewer, such as Adobe Reader (free).

Lay-over chart example
Note Page sizing and options

Important: Ensure that "Actual size" (no page scaling) is selected when printing. Measure the ruler on the printout to ensure correct scale.

Chrome/Firefox users: Printing to scale doesn't work in all versions of Firefox and Chrome. We recommend using a PDF reader such as Adobe Reader.

All Printable Tools and Charts
PDF All Printable Tools and Charts
All of our printable tools and charts, including our Fastener Basics and Type Charts, in one 32-page PDF file.
Fastener Basics
PDF Fastener Basics
Our 2-page, illustrated guide to basic fastener concepts - designed to quickly give you the knowledge to identify, find and use the correct fastener.
Fastener Type Chart
PDF Fastener Type Chart
This comprehensive reference guide will help you identify fastener categories, head styles and drive types, as well as common nut and washer types.

Tools

US and Metric Ruler
PDF US and Metric Ruler
Print a fully functional US and Metric ruler.
US and Metric Thread Gauge
PDF US and Metric Thread Gauge
A printable paper version of our popular Thread Gauges. Use this tool to distinguish between coarse and fine thread bolts and machine screws, as well as the many thread pitches used on metric bolts and machine screws.

See our catalog for thread gauge hardware.

US "Lay-over" Sizing Charts

Lay-over charts for quickly identifying diameter, thread count and other US fastener dimensions.

US Bolt Diameter and Thread Chart
PDF US Hex Bolts
US Machine Screw Diameter and Thread Chart
PDF US Machine Screws
Sheet Metal Screw Size Chart
PDF Sheet Metal Screws
US Nut Size Chart
PDF US Nuts
USS Flat Washer Size Chart
PDF USS Flat Washers
SAE flat washer sizes
PDF SAE Flat Washers
US Socket Cap Size Chart
PDF US Socket Caps
US Socket Flat Head Size Chart
PDF US Socket Flat Head Screws
US Socket Button Head Size Chart
PDF US Socket Button Head Screws
US Shoulder Bolt Size Chart
PDF US Shoulder Bolts
Screw Eye Size Chart
PDF Screw Eyes
S-Hook Size Chart
PDF S-Hooks
Hitch Pin Clip Size Chart
PDF Hitch Pin Clips

Metric "Lay-over" Sizing Charts

Lay-over charts for quickly identifying diameter, thread pitch and other metric fastener dimensions.

Metric Bolt Diameter and Thread Chart
PDF Metric Hex Bolts
Metric Machine Screw Diameter and Thread Chart
PDF Metric Machine Screws
Metric Nut Size Chart
PDF Metric Nuts
Metric Flat Washer Size Chart
PDF Metric Flat Washers
Metric Shoulder Bolt Size Chart
PDF Metric Shoulder Bolts
Metric Socket Cap Size Chart
PDF Metric Socket Caps
Metric Socket Flat Head Screw Size Chart
PDF Metric Socket Flat Head Screws
Metric Socket Button Head Screw Size Chart
PDF Metric Socket Button Head Screws