Description
Spiral flute tap Red Shark with chamfer form C with a 2-3xP semi-bottoming lead, for Unified National Coarse thread UNC 7/8″ with 9 TPI and 2B class of fit with H6 pitch diameter limits, dimensions according to DIN/ANSI standard with 0.6970″ shank and 0.5200″ square drive, powder metallurgical HSS-E with TiAlN-Top coating and 45 Degree helix angle for 2.5xD blind hole threading in plain carbon, alloy and tool steel.
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