Description
Combination drill-tap with a 27 Degree spiral flute, for National Pipe Taper thread NPT 3/4″ with 14 TPI and Normal class of fit, dimensions according to ANSI standard with 0.9060″ shank and 0.9060″ square drive, HSS with bright finish and 27 Degree helix angle for 1.5xD through or blind hole threading in free machining steel.
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