Durable 1/4" roughing end mill built for reliable material removal in demanding machining environments. The Dormer Pramet C609 combines a 4-flute, fine-pitch geometry with TiCN-coated HSS-E steel and a flatted 3/8" Weldon shank for secure drive—designed for shoulder milling, slot milling, and ramping in regular-length operations.

• Diameter: 1/4 in
• Flutes: 4
• Length of cut: 5/8 in
• Overall length: 2-7/16 in
• Shank: Flatted 3/8 in Weldon shank
• Material & coating: HSS-E cobalt-based steel with TiCN coating
• Helix angle: 30°
• Pitch: Fine pitch
• Grade: Regular-length roughing end mill
• Standards: ANSI standard shank geometry
• Ideal applications: Shoulder milling, slot milling, and ramping in free-machining and plain carbon steels and copper/copper alloys

This tool is engineered to deliver consistent metal removal while maintaining control during hogging passes. The TiCN coating enhances wear resistance in tough materials, helping extend tool life under heavy cutting conditions. The 30° helix supports smoother entry and efficient chip flow, which is especially beneficial for shoulder and ramping operations. The flatted shank improves torque transfer and reduces slippage in chucks and collets, contributing to steadier cuts and repeatable dimensions. With its 4-flute design, you can achieve balanced chip evacuation and stable feeds in roughing passes, making it a practical choice for job shops working with free-machining steels and copper alloys.