Precision Woodruff cutter designed for keyway milling, the Dormer Pramet C822 delivers clean, accurate slots with a durable cobalt-based HSS-E core. Built for machinists and engineers who demand reliability across steel, stainless steel, cast iron, non-ferrous metals, and high-temperature alloys.

• Diameter: 4.5 mm
• Width of cut (WOC): 1 mm
• Overall length: 50 mm
• Teeth: 6
• Shank: 6 mm combi shank with Weldon flat and thread
• Material: Cobalt-based HSS-E with bright finish
• Helix angle: 10°
• Rake angle: 10°
• Standard: DIN 850
• Application: Keyway milling in steel, stainless steel, cast iron, non-ferrous metals, and high-temperature alloys

The tool’s 6-teeth configuration, combined with a 10° helix and 10° rake, provides smooth chip evacuation and clean wall finishes in precise keyway slots. The cobalt-based HSS-E construction offers enhanced wear resistance and hot-strength, extending tool life in demanding materials. The 6 mm combi shank with Weldon flat and threading ensures a secure, repeatable grip in compatible holders, reducing the risk of slippage during milling. With DIN 850 compliance, this cutter integrates seamlessly into standard tooling setups, delivering consistent performance across common metalworking applications.