EP301/2 UNF Machine Tap Spiral Point

Spiral point tap with chamfer form C with a 2-3xP plug lead, for Unified National Fine thread UNF 1/2" with 20 TPI and 2B class of fit, dimensions according to DIN 2184-1 standard with 9.0mm shank and 7.0mm square drive, powder metallurgical HSS-E with bright finish for 2.5xD through hole threading in free machining and plain carbon steel and wrought or cast aluminium and copper or copper alloys