Description
Spiral flute tap with chamfer form C with a 2-3xP semi-bottoming 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 Degree helix angle for 2xD blind hole threading in general purpose applications.
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