Durable long-series end mill designed for shoulder and slot milling in free‑machining steels and copper alloys. The Dormer Pramet C273 4.0 mm cutter combines a precise 4‑flute geometry with a Weldon shank for stable, accurate milling in deep pockets.

• Diameter: 4.0 mm cutting diameter with 19 mm length of cut (LOC) and 63 mm overall length (OAL)
• Shank: 6 mm Weldon shank for secure clamping in collets or end-milling chucks
• Material: Powder Metallurgical HSS‑E with bright finish for improved hardness and wear resistance
• Flutes and Geometry: 4 flutes, 30° helix and 12° rake angle optimized for shoulder milling and slot milling
• Standard: DIN 844 L long-series specification ensuring compatibility with standard holders
• Applications: Suitable for free machining and plain carbon steel, copper and copper alloys

This end mill is crafted to deliver consistent chip control and a smooth finish when milling shoulders and slots in demanding materials. The PM‑HSS‑E composition supports longer tool life under typical metalworking conditions, while the bright finish helps resist built‑up edge. The combination of a long reach and secure Weldon shank makes it a reliable choice for deep pocket work and intricate milling tasks.