Combination drill-tap with a 27° spiral flute, for National Pipe Taper thread NPT 1" with 11.5 TPI and Normal class of fit, dimensions according to ANSI standard with 1.1250" shank and 1.1250" square drive, HSS with bright finish and 27° helix angle for 1.5xD through or blind hole threading in free machining steel
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) - Possible use
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