Alps Tap And Die Set 1/4 To 3/4 British Standard Whitworth- Boxed Complete Bsw

TAP AND DIE SET 1/4 TO 3/. HEAVY DUTY TAP AND DIES SET 1/4 TO 3/4 BRITISH STANDARD WHITWORTH. British Standard Whitworth (BSW) is one of a number of imperial unit based screw thread standards which use the. Same hexagonal bolt head and nut sizes. NO OF SIZE: 07 (1/4" TO 3/4" BSW). SIZES: 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", 3/4, BSW. ROUND DIE HANDLE: 1" & 1-1/2" BSW. 4 BRITISH STANDARD WHITWORTH- BOXED COMPLETE BSW.