Ultra-compact 2.5 mm end mill engineered for precision in micro-milling, shoulder and slot operations. The Dormer Pramet C247 combines a 4-flute geometry with a 6 mm Weldon shank, DIN 844 K specifications, and a powder-metallurgical HSS-E core for durable performance in free-machining steel and copper alloys.

• Diameter: 2.5 mm
• Flutes: 4-flute design for efficient chip evacuation and stable cutting
• Length of cut: 8 mm
• Overall length: 52 mm
• Shank: Weldon, 6 mm
• Material: Powder-metallurgical HSS-E
• Finish: Bright finish
• Standard: DIN 844 K
• Helix angle: 30°
• Rake angle: 12° (optimized for shoulder milling, slot milling, and ramping)
• Series: Short length of cut for high rigidity in tight spaces
• Applications: Shoulder milling, slot milling, and ramping in free-machining and plain carbon steel, and copper or copper alloys

This end mill delivers precise feature creation on small-diameter parts with predictable chip control and clean edge quality. The 8 mm length of cut supports shallow pockets and profiling, while the 52 mm overall length provides reach in restricted areas. The 30° helix and 12° rake angle contribute to smoother cutting and reduced rubbing when working with tougher steels and copper alloys. The powder-metallurgical HSS-E composition offers robust edge retention for longer tool life, and a bright finish helps with visibility and wear monitoring during operation. DIN 844 K compliance ensures compatibility with standard holders and machine setups for reliable, repeatable performance.