Description
Spiral flute tap with chamfer form C with a 2-3xP semi-bottoming lead, for British Standard Pipe thread G 1″ with 11 TPI and Normal class of fit, dimensions according to DIN 5156 standard with 25.0mm shank and 20.0mm square drive, powder metallurgical HSS-E with bright finish and 45 Degree helix angle for 2.5xD blind hole threading in free machining and plain carbon steel and wrought or cast aluminium.
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