Fastener Info

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 files directly in your browser, you can use a PDF viewer, such as Adobe Reader (free).

Lay-over chart example

Important: Printing To Scale

Page scaling options When printing, make sure that any page scaling is turned off. After printing, measure the scale check 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 Fastener Tools (PDF)

General Reference and Tools
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 (Identification) Chart This comprehensive reference guide will help you identify fastener categories, head styles and drive types, as well as common nut and washer types.	US and Metric Ruler Print a fully functional US and Metric ruler.	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 Hex Bolts	US Machine Screws	Sheet Metal Screws	US Nuts
USS Flat Washers	SAE Flat Washers	US Socket Caps	US Socket Flat Head Screws
US Socket Button Head Screws	US Shoulder Bolts	Screw Eyes

Metric 'Lay-over' Sizing Charts
Lay-over charts for quickly identifying diameter, thread pitch and other metric fastener dimensions.
Metric Hex Bolts	Metric Machine Screws	Metric Nuts	Metric Flat Washers
Metric Shoulder Bolts	Metric Socket Caps	Metric Socket Flat Head Screws	Metric Socket Button Head Screws