Precision in a compact package: the Dormer Pramet C247 4.5mm HSS-E-Powder Metallurgical End Mill is engineered for small-diameter work, delivering reliable shoulder milling, slot milling, and ramping performance in free machining steels and copper alloys.

• Diameter: 4.5 mm
• Flutes: 4-flute design for stable cutting and efficient chip evacuation
• Length of Cut: 11 mm
• Overall Length: 55 mm
• Shank: Weldon 6 mm
• Material: Powder-metallurgical HSS-E (high-speed steel with enhanced toughness)
• Finish: Bright finish for reduced friction and easier cleaning
• Helix: 30° for smooth chip formation
• Rake Angle: 12° for effective cutting in shoulder milling
• Standard: DIN 844 K
• Applications: shoulder milling, slot milling, ramping
• Material Compatibility: suitable for free machining and plain carbon steel, copper or copper alloys

This end mill combines a robust 6 mm Weldon shank with a precise 4-flute geometry to deliver consistent diameters and clean finishes on small-diameter pockets and slots. The powder-metallurgical HSS-E construction offers improved wear resistance and toughness, helping extend tool life in demanding milling tasks. With a 30° helix and a 12° rake angle, it achieves efficient chip control, reduced work-harden, and reliable performance across a range of common metals.