Weekend Sale KEO 919 HSS Countersink, Ø1/2 x 90°, 1/4 Shank, 6 Flutes, min. Cut Ø.109, AlTiN Coated

When your application demands more than a standard countersink can deliver, KEO’s AlTiN-coated countersinks are built to keep up. The aluminum titanium nitride (AlTiN) coating forms an exceptionally hard, heat-resistant surface layer that dramatically reduces friction and wearso you get cleaner entry angles, more consistent chamfer geometry, and significantly longer tool life compared to uncoated alternatives.
Engineered for the rigors of metalworking, these countersinks perform where the heat builds fast: stainless steels, alloy steels, cast iron, and other ferrous materials that eat through lesser tooling. The coating acts as a thermal barrier, keeping heat in the chip rather than the cutting edge, preserving sharpness through longer run times and higher speeds.
Backed by KEO’s precision manufacturing standards, every countersink in this line delivers the tight tolerances and repeatable performance machinists rely on shift after shift.

Benefits

• AlTiN coating provides excellent heat and oxidation resistance.
• Maintains sharpness for longer periods, resulting in fewer tool changes for tough jobs.
• Extends tool life.
• Capable of higher speeds and feeds than similar non coated countersinks.

Applications

• Ideal for stainless and hardened steels, titanium alloys, and ferrous metals.

Features

• 6 Flute design is optimized for finish quality and hard materials.