Description
Spiral point tap with chamfer form B with a 3.5-5xP second lead, for Unified National Coarse thread UNC 8 with 32 TPI and 2B class of fit, dimensions according to ISO 529 standard with 4.5mm shank and 3.55mm square drive, powder metallurgical HSS-E with steam tempered surface finish for 2.5xD through hole threading in general purpose applications
