Dormer M Machine Tap Spiral Flute 45 , Pack of 1

HSS-E-PM Premium Powder Metal substrate provides superior abrasion resistance and edge strength 45 degree helix and specific rake designed for excellent performance when threading blind holes Back taper facilitates chip evacuation, reducing chipping on the last threads of the taps and also reducing torque when tap reverses TiAlN-Top Coating increases surface hardness, wear resistance and improves tool life Special flute geometry prevents nest formation of swarf, reducing the risk of re-cutting swarf on reversal