Durable and precise, the Dormer Pramet C618 1/2 Inch HSS-E Flatted Shank end mill is built for dependable performance in shoulder milling, slot milling, and ramping. Designed for free machining and plain carbon steels as well as copper and copper alloys, this 4-flute cutter delivers consistent results in demanding shop environments.

• Diameter: 1/2" (12.7 mm)
• Flutes: 4-flute design for efficient chip evacuation and steady cutting
• Length of Cut: 1.25" (31.75 mm)
• Overall Length: 3.25" (82.55 mm)
• Shank: 1/2" Weldon shank for secure seating in collets and holders
• Material & Finish: HSS-E cobalt-based steel with a bright finish, offering enhanced wear resistance
• Helix Angle: 30° for smooth cutting and effective engagement in shoulder, slot milling, and ramping
• Standards: ANSI standard dimensions ensuring compatibility with common tool setups
• Recommended Use: Suitable for free machining and plain carbon steel, plus copper and copper alloys

This end mill pairs a robust HSS-E core with a precision ground flatted shank to deliver reliable performance across common milling tasks. The 30° helix promotes efficient material removal and a clean finish, while the 4-flute geometry balances rigidity and chip clearance for steady milling in mid-cut applications. Ideal for production environments where repeatable results and dependable tool life matter.