The Whitworth British Thread standard is obsolete and not in use as a standard for new products. The information contained herein is for reference only in the application of spare and replace …

British Standard Whitworth Threads Chart Specification

Whitwoth Threads: Dimensions and Tolerances (BSW/BSF) The Whitworth screw thread standard is based on imperial units and was developed by Joseph Whitworth in 1841. It was later …

Whitworth's new standard specified a 55° thread angle and a thread depth of 0.640327 p and a radius of 0.137329 p, where p is the pitch. The thread pitch increases with diameter in steps …

N = Number of threads per inch. H = Height. D = Depth. DE = Screw Diameter. DM = Mid Diameter. DF = Interior Diameter.

Parallel screw threads of Whitworth form (BSW | BSF) profile, dimension and tolerance. B.S.W. 1/4-20, B.S.W. 5/16-18, B.S.W. 3/8-16, B.S.W. 7/16-14, B.S.W. 1/2-12, B.S.W. 9/16-12, …

The British Standard Whitworth (BSW) thread size chart provides information on the various thread sizes available under this system. BSW threads are defined by their diameter and …

British Standard Whitworth thread chart, BSW thread chart showing TPI and drill sizes.

Whitworth and UNC/UNF thread forms differ greatly, the primarily one being the thread angle (see illustrations). BSW and BSF feature a 55° thread angle (47.5° for BA) and UNC/UNF threads …

The document provides a comprehensive chart of British Standard Whitworth (BSW) threads, detailing various nominal sizes, major diameters, pitch, threads per inch, and corresponding …