Description
Straight flute hand tap NO3 with a 2-3xP semi-bottoming lead, for British Standard Fine thread BSF 3/8″ with 20 TPI and Medium class of fit, dimensions according to ISO 529 standard with 10.0mm shank and 8.0mm square drive, HSS with bright finish for 1.5xD through or blind hole threading in free machining steel and copper or copper alloys.
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