E238M4

Spiral flute tap Blue Shark with chamfer form C with a 2-3xP plug lead, for ISO-Metric thread M4 with 0.70 mm pitch and 6H class of fit, dimensions according to DIN 371 standard with 4.5 mm shank and 3.4 mm square drive, powder metallurgical HSS-E with steam tempered surface finish and 40° helix angle for 2.5xD blind hole threading in stainless steel