EP211/4 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 1/4" with 20 TPI and 2B class of fit, dimensions according to DIN 2184-1 standard with 7.0mm shank and 5.5mm square drive, powder metallurgical HSS-E with steam tempered surface finish for 2.5xD through hole threading in general purpose applications