Description
Straight flute tap with chamfer form C with a 2-3xP semi-bottoming lead, for National Pipe Taper thread NPT 3/8″ with 18 TPI and Normal class of fit, dimensions according to ~ANSI B94.9 standard with 17.8mm shank and 13.5mm square drive, HSS with bright finish for 1.5xD through or blind hole threading in alloy steel.
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