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.

Sheet Metal Thread Dimensions for Types AB, A and U Thread Forming Tapping Screws

RSVP Tooling, Inc. - Axial Thread Rolling System - Metric Screw Threads M Profile - 0.30 to 1.25 Pitch

How to Measure Screw Size and Pitch – Evolvent Design

Fasteners

ISO metric coarse vs fine screw thread Fittings - QC Hydraulics

Measuring Thread Pitch & Threads Per Inch

Fastener Thread Diameters and Installation Torques - Abbott Aerospace UK Ltd

Screw Size Guide What Are Screw Thread Sizes? - Accu

Screw thread measurement

How to measure bolt size

Everything You Wanted To Know About Taps But Were Afraid To, 40% OFF

Selecting the Right Screw