The Dormer Pramet C273 18.0 mm HSS‑E Powder Metallurgical End Mill is a long‑series, four‑flute cutter designed for shoulder and slot milling in free‑machining steels and copper alloys. With a 16 mm Weldon shank and extended reach, it delivers reliable performance for deep pockets and precise slots.

• Diameter: 18 mm
• Flutes: 4
• Length of Cut (LOC): 63 mm
• Overall Length: 123 mm
• Reach with Neck Relief: 74.5 mm
• DIN Standard: DIN 844 L
• Shank: 16 mm Weldon shank
• Material: Powder Metallurgical HSS‑E with bright finish
• Helix: 30°
• Rake Angle: 12°
• Applications: Shoulder milling and slot milling
• Compatible Materials: Free‑machining steel and copper or copper alloys

This end mill is built for precision in challenging depths thanks to its long series geometry and neck relief, which reduce rubbing and tool wear during deep pocketing. The powder‑metallurgical HSS‑E core combines toughness with wear resistance, enabling efficient cutting at productive speeds in both free‑machining steels and copper alloys. A 30° helix fosters smooth chip evacuation and steady cutting action, while the 12° rake angle supports efficient chip formation during shoulder milling. The 16 mm Weldon shank provides secure clamping for consistent performance and minimal runout, helping you achieve cleaner finishes and tighter tolerances across demanding milling tasks.