Description
Spiral flute tap with chamfer form C with a 2-3xP plug lead, for Unified National Fine thread UNF 8 with 36 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 and 45° helix angle for 2.5xD blind hole threading in general purpose applications
