Description
Spiral flute tap with chamfer form C with a 2-3xP plug 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 and 45° helix angle for 2.5xD blind hole threading in general purpose applications
