Dormer E260M3 6554500 Machine Tap Spiral Flute 45° Back Tapered Red Shark 3FL M3 x 0.50 mm Spiral flute tap Red Shark with chamfer form C with a 2-3xP semi-bottoming lead, for ISO-Metric thread M3 with 0.50 mm pitch and 6H class of fit, dimensions according to DIN 371 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 plain carbon, alloy and tool steel.