Description
Spiral point tap with chamfer form B with a 3.5-5xP plug lead, for Unified National Fine thread UNF 1″ with 12 TPI and 2B class of fit, dimensions according to ISO 529 standard with 18.0mm shank and 14.0mm 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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