The Dormer Pramet C618 3/4 Inch HSS-E Flatted Shank 4 Flute End Mill is a versatile, regular-length milling tool built for precision shoulder and slot work, as well as ramping in free-machining steels and copper alloys.

• Diameter: 3/4" (0.75")
• Flutes: 4 flute design for efficient material removal
• Overall length: 3-7/8" (3.875")
• Length of cut: 1-5/8" (1.625")
• Shank: Weldon-style 3/4" shank for secure seating in collets or chucks
• Material: HSS‑E (cobalt-based) for enhanced wear resistance and heat tolerance
• Finish: Bright finish to aid inspection and reduce surface adhesion
• Helix: 30° for smooth cutting, effective chip evacuation, and good surface finish
• Standard: ANSI regular-length end mill
• Applications: Shoulder milling, slot milling, and ramping in free-machining steel and copper/copper alloys

Designed to deliver reliable performance in everyday milling tasks, this end mill combines a sturdy flatted shank with a cobalt-based HSS substrate to stand up to demanding cuts. The 4-flute geometry provides a balanced blend of cutting efficiency and finish quality, while the 30° helix supports steady engagement and consistent chip control. Whether you’re resurfacing shoulders, milling slots, or ramping into material, the C618 end mill offers predictable results in free-machining steels and copper alloys, making it a dependable choice for both manual and CNC setups.