Spiral flute machine tap with chamfer form C with a 2 - 3 x P semi-bottoming lead, for Unified National Coarse thread UNC 1/4in with 20 TPI and 2B class of fit, dimensions according to ISO 529 standard with 6.3mm shank and 5mm square drive, powder metallur
Spiral flute machine tap with chamfer form C with a 2 – 3 x P semi-bottoming lead, for Unified National Coarse thread UNC 1/4in with 20 TPI and 2B class of fit, dimensions according to ISO 529 standard with 6.3mm shank and 5mm square drive, powder metallurgical HSS-E with uncoated surface finish and 45 helix angle for 2.5 x D blind hole threading in general purpose applications.
Cost: $25
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