Free Shipping on orders of $40 or more placed February 11 to 25

Learn more
0 Cart Menu


This steel gauge is a quick all-in-one reference for identifying screw diameter, length and thread, tap drill size, and through-hole drill clearance size. Each reference hole is precisely tapped for direct screw threading to ensure proper identification.

The Imperial version gauges common fastener sizes from #1 through 5/16", and threads per inch from 72 to 18; the metric version measures diameter from M2 to M7 and pitch from 0.25 to 1.00. A useful tool for quickly identifying threaded fasteners, wood screws and tapping screws, it includes instructions and a handy decimal equivalent chart. Made in the USA.

Product Availability At All Stores


Item Added to your cart

{{ products.length }} Items Added to your cart

Items in your cart

Product Title



QTY: 0


Share On Facebook Share via Email


Sign In

User Name is a required field.

Password is a required field.

Forgot password?

Benefits of creating an account:

Create an account

Please enter the username associated with your Lee Valley account and we will send you an email to reset your password.