The Dormer Pramet C273 25.0 mm HSS-E Powder Metallurgical End Mill is a high‑performance tool designed for shoulder and slot milling in free‑machining steels and copper alloys. Its long series geometry provides extended reach without sacrificing rigidity, making it ideal for deep pockets and intricate pockets where accuracy matters.

• Diameter: 25.0 mm
• Length of Cut: 90 mm
• Overall Length: 166 mm
• Reach with Neck Relief: 109.5 mm
• Flutes: 5
• Shank: Weldon, 25 mm
• Material: HSS‑E powder metallurgical with bright finish
• Helix: 30°
• Rake Angle: 12°
• Standard: DIN 844 L
• Applications: Shoulder milling and slot milling
• Suitable Materials: Free machining carbon steels and copper/copper alloys

The five‑flute design together with a 30° helix delivers efficient chip evacuation and steady cutting at moderate to higher feed rates, yielding smooth surfaces on shoulders and precise slots. Powder metallurgical HSS‑E combines toughness and wear resistance for longer tool life in demanding materials, helping you reduce tool changes in busy production environments. The long series geometry (166 mm overall length with a 109.5 mm reach) enables deeper pockets and undercuts while maintaining control and rigidity, and the Weldon 25 mm shank provides repeatable clamping in standard tool holders for secure performance. This end mill is well suited for free machining steels and copper alloys, offering reliable performance where precision and productivity matter most.