High-Precision Solid Carbide Countersink, 90 Deg, TiAlN Coated, 20.5 mm

All countersinks have 3 cutting edges. Special geometry with extremely unequal spacing and matching cutting edge preparation. Radially relief ground. Flutes ground from solid. Newly developed special TiAlN coating for long service life. High-precision countersink, produced with tight manufacturing tolerances similar to DIN 335-C. Advantage: Very smooth cutting throughout the entire countersinking operation. Chatter-free running for perfect results and optimum tool service life. Application: High-precision countersinks for production of exactly round 90 Deg countersunk surfaces. Very well suited to virtually all materials. Advantage in comparison to HSS countersinks especially in the field of high-tensile steels and because the working life is several times longer. Shank tolerance h6 suitable for mounting in hydraulic chucks or shrink-fit chucks. Through-coolant: no Number of cutting edges Z: 3 Number of cutting edges Z: 3 smallest countersink Dia. for holes from: 3.5 mm Overall length L: 63 mm Shank Dia. Ds: 10 mm for countersunk screws DIN 7991: M10 Feed f in steel < 1100 N/mm2: 0.2 mm/rev.