Description
Spiral point tap with chamfer form B with a 3.5-5xP plug lead, for Unified National Coarse thread UNC 1″ with 8 TPI and 3B class of fit with H4 pitch diameter limits, dimensions according to ANSI standard with 0.8000″ shank and 0.6000″ square drive, powder metallurgical HSS-E with steam tempered surface finish for 2.5xD through hole threading in general purpose applications.
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