Standard thread pitch explanations and a chart showing number of threads per inch for National Coarse, National Fine and 8 Pitch threads.

Thread pitch chart for UNC, UNF, UNEF, and constant-pitch UN series up to 2 inches. Reference ASME B1.1 Unified Inch Screw Threads (UN and UNR). Includes TPI values and practical usage tips.

UNC THREAD CHART Use this UNC thread chart to look up unified coarse thread dimensions per ASME B1.1. Find major diameter, pitch diameter and minor diameter limits for both external (2A/3A) …

Standard Coarse 0.125 0.250 0.250 0.300 0.350 0.350 0.400 0.450 0.450 0.450 0.500 0.600 0.700 0.800 1.000 1.000 1.250 1.500 1.750 2.000 2.000 2.500 2.500 2.500 3.000 ...

METRIC THREAD CHART Metric thread chart according to ASME B1.13M M Profile thread standard. ... General Note: All dimensions are in millimeters. Supplements: Thread calculators and charts ISO …

UNF thread chart per ASME B1.1: unified fine (UNF) thread dimensions — major, pitch and minor diameters for external and internal threads (inch). Includes common sizes like 1/4-28, 5/16-24, 3/8 …

BSP THREAD CHART British Standard Pipe thread dimensions per ISO 228 (BSPP) and ISO 7 (BSPT). Includes pitch, major, pitch, and minor diameters in millimetres for each pipe size.

Metric Internal Thread Dimensions Chart Metric internal thread dimensions chart according to ASME B1.13M "Metric Screw Threads: M Profile" standard. Minor diameter, pitch diameter and major …

NPT THREAD CHART NPT Thread Chart for basic dimensions of general purpose NPT pipe threads (inch) according to ANSI/ASME B1.20.1 standard. American National Standard Taper Pipe Thread …

ACME thread calculator and dimensions chart per ASME B1.5. Get external (rod) and internal (nut) major, pitch and minor diameter limits for 2G/3G/4G classes, including multi-start lead.