Description
Spiral point tap with chamfer form B with a 3.5-5xP second lead, for British Standard Pipe thread G 1/4″ with 19 TPI and Normal class of fit, dimensions according to DORMER-ISO standard with 10.0mm shank and 8.0mm square drive, powder metallurgical HSS-E with steam tempered surface finish for 2.5xD through hole threading in general purpose applications
