Dormer M Machine Tap Spiral Flute 40 , Pack of 1

HSS-E-PM Premium Powder Metal substrate provides superior abrasion resistance and edge strength 40 degree helix and specific rake designed for excellent performance when threading blind holes Hard Chrome Plating increases surface hardness significantly and prevents the swarf from sticking Optimum design provides consistently high tool life and reliability when tapping at higher cutting speeds Yellow colour ring around the shank identifies the tap for use on Carbon Steels and Low Alloy Steels