Durable, high-performance roughing end mill designed for CNC operators and machinists working with free‑machining steels and copper alloys. The Dormer Pramet C609 5/16" HSS‑E TiCN end mill features a flatted shank and a fine pitch geometry that delivers efficient material removal with consistent results.

• Diameter: 5/16" (0.3125")
• Length of Cut: 3/4"
• Overall Length: 2.5"
• Flutes: 4
• Shank: 3/8" Weldon shank with flat for positive grip
• Material: HSS‑E (cobalt-based) with TiCN coating
• Coating: TiCN for enhanced wear resistance and heat resistance
• Helix Angle: 30°
• Profile: HR regular fine pitch for efficient roughing
• Applications: Shoulder milling, slot milling, and ramping in free machining and plain carbon steel and copper alloys
• Standard: ANSI standard

This end mill is optimized for aggressive roughing passes while maintaining control and predictable performance across common shop materials. The TiCN coating reduces built‑up edge and wear, helping extend tool life during longer cycles. A 30° helix supports smooth chip formation and steady finishes on shoulders and slots, and the flatted 3/8" Weldon shank ensures secure seating and minimizes chatter in demanding applications. Suitable for mixed tasks in free machining steels and copper alloys, it’s a reliable single‑tool solution for productive roughing work.