Description
Straight flute tap with chamfer form C with a 2-3xP semi-bottoming lead, for Unified National Fine thread UNF 5/16″ with 24 TPI and 2B class of fit, dimensions according to DIN 374 standard with 6.0mm shank and 4.9mm square drive, powder metallurgical HSS-E with bright finish for 1.5xD through or blind hole threading in free machining and plain carbon steel.
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