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G-Series pipe thread chart (British standard pipe parallel was BSPP & BSPF) and PF-Series pipe thread chart (Japanese pipe parallel).
BSPP G 1/4 : Brith Pipe (BSP) Thread Dimensions and Tolerances. All the relevant data for this tread in one spot.
External Pipe Threads per. ISO 228-1, Pipe threads where pressure-tight joints are not made by the threads. These pipe threads are also known as Whitworth pipe threads.
Parallel Pipe Thread (G) Profile. Thread form angle : 55°. P : Pitch. n : TPI. H : Height of fundamental triangle. h : Height of thread. r : Radius at the top and bottom of the thread. D : Major diameter of internal thread. D1 : Minor diameter of internal thread.
The Jargon, calculations, and charts defining BSP threads differ greatly from standard metric and inch threads. This webpage will explain the difference between the various series, how each parameter is defined, and show how to find the correct basic dimensions and tolerances for each thread. Table of Contents.
British Standard Pipe Parallel (BSPP) thread calculator for thread form of Whitworth thread. Calculate dimensions, tolerances and designation for pipe threads for sizes from 1/16 to 6 according to ISO 228 - 1 standard.
nominal thread size (inch) major diameter (mm) minor diameter (mm) tpi g 1/16 g 1/8 g 1/4 g 3/8 g 1/2 g 3/4 g 1 g 2 g 3 6.561 8.566 11.445 14.950 18.631 24.117 30.291 56.656 84.962 7.723 9.728 ... british standard pipe dimensions for unified thread sizes male tapered thread size (inch) corresponding pipe 1/16 1/8 1/4 3/8 1/2 3/4 1 2 3 6 8 10 15 ...
