E5703/4X20NO3 HSS Straight Flute Hand Tap, UN, ISO Standard

Straight flute hand tap NO3 with a 2-3xP plug lead, for Unified National thread UN 3/4" with 20 TPI and 2B class of fit, dimensions according to ISO 529 standard with 14.0mm shank and 11.2mm square drive, HSS with bright finish for 1.5xD through or blind hole threading in free machining and plain carbon steel and copper or copper alloys