Description
Straight flute hand tap NO1 with a 6-8xP taper lead, for Unified National Fine thread UNF 5/8″ with 18 TPI and 3B class of fit with H3 pitch diameter limits, dimensions according to ANSI standard with 0.4800″ shank and 0.3600″ 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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