Combination drill-tap with a 27° spiral flute, for National Pipe Taper thread NPT 1/2" with 14 TPI and Normal class of fit, dimensions according to ANSI standard with 0.6870" shank and 0.6870" 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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