Designed for deep-pocket roughing and precision shoulder/slot milling, the Dormer Pramet C948 20.0 mm HSS-E end mill delivers durable performance in steel and other challenging materials. Its long-series geometry and NRA asymmetrical coarse-pitch profile are tuned for efficient material removal and steady progress in demanding milling operations.

• Diameter: 20 mm
• Length of cut: 75 mm
• Overall length: 141 mm
• Reach with neck relief: 90.5 mm
• Shank: Weldon 20 mm
• Material and coating: Powder-metallurgical HSS-E with Alcrona Primax coating
• Flutes: 4
• Helix angle: 35°
• Rake angle: 12°
• DIN standard: 844 L
• Profile: NRA asymmetrical coarse-pitch
• Applications: Shoulder milling and slot milling in plain carbon steel, alloy steel, tool steel, stainless steel, cast iron, copper or copper alloys, and high-temperature alloys

This end mill is built for reliability under demanding roughing conditions. The 4-flute configuration provides robust material removal with efficient chip evacuation, while the 35° helix and 12° rake angle help manage cutting forces and deliver a smoother finish on wide shoulders and through slots. The Alcrona Primax coating enhances wear resistance and heat tolerance, extending tool life during extended milling cycles. With a long reach and neck relief, it excels in deep pockets and features where tool clearance is critical, all while conforming to the DIN 844 L standard for compatible tool holding and predictable performance.