HSS Straight Flute Hand Tap, UNC, ISO Standard
Material ID: 5976808

Straight flute hand tap NO2 with a 4-6xP second lead, for Unified National Coarse thread UNC 5/16" with 18 TPI and 2B class of fit, dimensions according to ISO 529 standard with 8.0mm shank and 6.3mm 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