E303M20NO1 M Machine Tap Straight Flute

Straight flute nut tap with a 18-20xP extra long taper lead, for ISO-Metric thread M20 with 2.50 mm pitch and 6H class of fit, dimensions according to DIN 357 standard with 16.0mm shank and 12.0mm square drive, cobalt based HSS-E with bright finish for 2xD through or blind hole threading in free machining steel