Thread Gauges

Nuts and Bolts “Thread Checker” is for Sizing Unknown Hardware

Jan 21, 2019 Stuart 44 Comments

The Thread Checker is a portable and easy-to-use gauge for IDing nuts, bolts, and other hardware.

Thread Checkers, Screw Gauges, & Size Identification

Jan 21, 2010 Stuart 8 Comments

After posting about Lee Valley’s new thread ID tool, we started thinking about other thread-identification tools that we’re familiar with. Identifying a thread is usually done in one of two ways – by matching an unknown thread to a fastener of known thread, or by measuring and comparing the diamater and thread pitch of a fastener. Following are a few types […]

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