What are screw thread sizes?

Measuring your screw thread helps you determine the correct screw size you need. Check out our quick guide on how to determine your screw thread size.
A guide to measuring your screws correctly.

How to Measure Thread Size? A Precision Guide - SendCutSend

Screw thread measurement

Screw thread - Wikipedia

ISO Metric screw thread - Salis Parts Salis Parts

Thread Chart (Metric) Major and Minor Diameters

Screw Thread Terminology Explained

How to Measure Screws & Bolts - US & Metric Sizing

What are screws heads, drives and threads?

ANSI External Screw Threads Size Tolerances Chart

Thread Pitch Charts