Fastenerdata - BSW Threads British Standard Whitworth fastener thread - Fastener Specifications
British Standard Whitworth Size Chart — CAD/CAM Software Blog
What is the difference between BSF/BSW and UNF/UNC?
Draw to scale 1:1, the standard profile of the B.S.W. thread (External) with the enlarged pitch = 50 mm. Give standard dimensions. - Sarthaks eConnect | Largest Online Education Community
British Std Whitworth
BSW/BSF Thread Dimensions Chart | Optimas International