The Dormer Pramet C247 5.5 mm end mill is a compact, versatile cutting tool designed for precision shoulder milling, slot milling, and ramping in free‑machining steels and copper alloys. With a powder‑metallurgical HSS‑E composition and a robust 6 mm Weldon shank, it delivers reliable performance in small‑diameter operations.

• Diameter: 5.5 mm
• Flutes: 4-flute configuration for efficient chip evacuation
• Length of cut: 13 mm
• Overall length: 57 mm
• Shank: 6 mm Weldon shank for secure clamping
• Material: Powder metallurgical HSS‑E with bright finish
• Helix angle: 30° for balanced cutting action and reduced vibration
• Rake angle: 12° to improve chip flow and cutting efficiency in shoulder milling
• Standard: DIN 844 K compatible body
• Applications: Shoulder milling, slot milling, and ramping
• Material compatibility: Suitable for free‑machining and plain carbon steel as well as copper and copper alloys

This end mill is engineered to deliver consistent performance across small‑diameter milling tasks. The powder‑metallurgical HSS‑E composition enhances edge strength and wear resistance, helping maintain tight tolerances and a clean surface finish over more cuts. The bright finish reduces built‑up edge and promotes smooth chip flow, while the Weldon 6 mm shank provides secure, repeatable clamping and minimal runout. With its 30° helix and 12° rake, it handles shoulder and slot milling smoothly and ramps efficiently, making it a reliable choice for production environments that machine free‑machining steels and copper alloys.