Description
Straight flute hand tap NO3 with a 2-3xP semi-bottoming lead, for Unified National thread UN 1.3/16″ with 12 TPI and 2B class of fit, dimensions according to ISO 529 standard with 22.4mm shank and 18.0mm square drive, HSS with bright finish for 1.5xD through or blind hole threading in free machining and plain carbon steel and copper or copper alloys.
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