Description
Spiral flute tap with chamfer form C with a 2-3xP semi-bottoming lead, for Unified National Fine thread UNF 5/8″ with 18 TPI and 2B class of fit, dimensions according to ISO 529 standard with 12.5mm shank and 10.0mm square drive, powder metallurgical HSS-E with steam tempered surface finish and 45 Degree helix angle for 2.5xD blind hole threading in general purpose applications.
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