Spiral point tap with chamfer form B with a 3.5-5xP second lead, for Unified National Fine thread UNF 5/8" with 18 TPI and 3B class of fit with H3 pitch diameter limits, dimensions according to ANSI standard with 0.4800" shank and 0.3600" 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
Applications:
P - Steel and cast steel(steels with alloy content ? 10% and a hardness of < 45HRC) - Primary use
N - Non-ferrous metals(metals including alloys without an appreciable amount of iron) - Primary use
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