Description
Spiral flute tap with chamfer form C with a 2-3xP plug lead, for British Standard Whitworth thread BSW 1/2″ with 12 TPI and Medium class of fit, dimensions according to ISO 529 standard with 9.0mm shank and 7.1mm square drive, HSS with bright finish with steam tempering and 40° helix angle for 2xD blind hole threading in free machining and plain carbon steel
