Thread Pitch Charts

Thread series cover how diameter/pitch combinations are measured by the number of threads per inch (TPI). Get your free thread pitch charts here.

Thread Pitch Calculator

Pitch Diameter Charts

ANSI External Screw Threads Size Tolerances Chart

Thread Chart (Metric) Major and Minor Diameters

The Gorilla Tool is a combination Bolt Sizer, Thread Pitch Gage, and Bolt Grade Chart designed to assist in the accurate replacement of bolts.

The Gorilla Bolt Sizer & Thread Pitch Gauge: Inch

Metric Thread Pitch Chart

Basic Screw and Thread Terms

Thread Pitch Chart PDF, PDF, Cutting Tools

ISO metric coarse vs fine screw thread Fittings - QC Hydraulics

ISO 724 - Metric Threads

Thread Calculator

Fastener Basics

The Gorilla Bolt Sizer & Thread Pitch Gauge: Metric