Spiral flute tap with chamfer form c with a 2-3xp semi-bottoming lead, for unified national coarse thread unc 4 with 40 tpi and 2b class of fit, dimensions according to din 2184-1 standard with 3. 5mm shank and 2. 7mm square drive, powder metallurgical hss-e with bright finish and 45�� helix angle for 2. 5xd blind hole threading in free machining and plain carbon steel and wrought or cast aluminium
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Brand: Dormer Pramet
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EDP: 5973704
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