Dormer Pramet C247 20.0mm HSS-E-Powder Metal Flatted Shank Multi-Flute Standard Length End Mill DIN 844 K

The Dormer Pramet C247 20.0 mm HSS-E powder-metallurgical end mill is a reliable, all-round cutting tool designed for shoulder milling, slot milling, and ramping in free-machining steels and copper alloys. With a Weldon 20 mm shank and a robust 4-flute geometry, it delivers consistent performance from roughing to finishing passes.

• Diameter: 20.0 mm
• Flutes: 4
• Length of cut: 38 mm
• Overall length: 104 mm
• Reach with neck relief: 53.5 mm
• Shank: Weldon 20 mm
• Material: HSS-E powder metallurgical with bright finish
• Helix angle: 30°
• Rake angle: 12°
• Standard: DIN 844 K
• Applications: Shoulder milling, slot milling, ramping
• Material compatibility: Free machining steels, plain carbon steels, copper and copper alloys

Designed for predictable performance across common milling tasks, this end mill optimizes material removal while preserving a good surface finish. The powder-metallurgical HSS-E construction offers improved hardness and wear resistance, helping the tool maintain its edge in demanding operations. A 30° helix promotes efficient chip evacuation, reducing heat and improving stability in copper alloys, while the 12° rake angle supports clean shoulders and accurate profiling. The neck relief extends reach without sacrificing rigidity, enabling deeper pockets and ramping cuts. A secure Weldon shank ensures precise clamping and minimal runout in standard toolholding systems, and the DIN 844 K specification guarantees compatibility with widely used holders and collets for smooth, productive machining.