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 Chart: Imperial & Metric Tap & Drill Chart: Imperial & Metric, PDF, Cutting Tools
Thread Chart (Metric) Major and Minor Diameters
Hydraulic Fitting Thread Chart
Thread Pitch Chart PDF, PDF, Cutting Tools
Metric Threads: Dimensions, Classes & Formulas (full Guide)
Screw Pitch Gauge to identify metric, unified, american, BSP, whitworth thread pitches - Newman Tools
How To Measure Thread Size and Pitch
ANSI External Screw Threads Size Tolerances Chart
Metric Thread Pitch dimensions - U-Bolts-R-Us / Graphskill Ltd Blog
Hydraulic Fitting Thread Chart