Engineered for professional machinists and job shops, the Dormer Pramet C247 1/4" end mill delivers dependable precision for shoulder milling, slot milling, and ramping in free machining and copper alloys. Its powder-metallurgical HSS-E construction and DIN 844 K compatibility make it a robust choice for everyday milling workloads.

• Diameter: 1/4" (6.35 mm) cutting diameter for precise, controlled material removal
• Flutes: 4-flute geometry optimized for steady chip evacuation and smooth finishes
• Length of Cut (LOC): 16 mm, supporting shallow to moderate depth cuts
• Overall Length: 66 mm, providing reach and rigidity for varied workholding setups
• Shank: Weldon 10 mm for secure retention in collets and end-mill holders
• Material: Powder-metallurgical HSS-E with bright finish for higher hardness and wear resistance
• Helix Angle: 30°, promoting efficient chip flow and better surface finish
• Rake Angle: 12° designed to ease cutting in shoulder milling applications
• Standard: DIN 844 K, ensuring compatibility with standard tool holders and catalogs
• Applications: Shoulder milling, slot milling, and ramping in free machining steels and copper/copper alloys

This end mill is well-suited for shops pursuing reliable, repeatable performance on a range of steels and copper alloys. The combination of a 4‑flute design, 30° helix, and gritty wear resistance reduces chip buildup and improves cutting stability, while the Weldon shank delivers dependable clamping during demanding passes. Use for precise pocketing, clean shoulder milling, and efficient ramping in free machining and plain carbon steels, as well as copper and its alloys.