Description
Straight flute hand tap NO2 with a 4-6xP second lead, for Unified National Coarse thread UNC 1.1/2″ with 6 TPI and 2B class of fit, dimensions according to ISO 529 standard with 28.0mm shank and 22.4mm square drive, HSS with bright finish for 1.5xD through or blind hole threading in free machining steel and copper or copper alloys
