E0211/2 UNC Machine Tap Spiral Point

Spiral point tap with chamfer form B with a 3.5-5xP second lead, for Unified National Coarse thread UNC 1/2" with 13 TPI and 2B class of fit, dimensions according to ISO 529 standard with 9.0mm shank and 7.1mm square drive, powder metallurgical HSS-E with steam tempered surface finish for 2.5xD through hole threading in general purpose applications