E258M4 M Machine Tap Spiral Flute 15°

Spiral flute tap 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 376 standard with 2.8mm shank and 2.1mm square drive, powder metallurgical HSS-E with bright finish and 15° helix angle for 1.5xD blind hole threading in alloy steel