Master SteelHT HSS Countersink with Unequal Spacing, 90 Deg, TiAlN Coated, 40 mm

Countersinks with 3 convex unequally spaced cutting edges for chatter-free countersinking and deburring. Robust design and special geometry with variable pitch of the spiral cutting edges for the highest demands - even in difficult-to-machine materials such as Toolox 44 and Hardox 500. Significantly reduced radial and axial forces. Manufactured with narrower production tolerances than specified by DIN335-C. Advantage: High self-guidance and stability due to the convex cutting edge geometry. Chatter-free running for excellent results with long tool life at the same time. Application: High-precision countersinks for production of exactly round 90 Deg countersunk surfaces in steel, cast iron and materials that are challenging to machine. Exceptionally well suited for use on hand-held power drills and single-pillar drilling machines. Through-coolant: no Number of cutting edges Z: 3 Number of cutting edges Z: 3 smallest countersink Dia. for holes from: 12 mm Overall length L: 75 mm Shank Dia. Ds: 12 mm for countersunk screws DIN 7991: M24 Feed f in steel < 1400 N/mm2: 0.13 mm/rev.