The Dormer Pramet C407 12.0 mm HSS-E powder-metallurgical Primax roughing end mill is a high-performance cutting tool crafted for demanding shoulder, slot milling and ramping tasks in steel and stainless steels. With its NRA asymmetrical coarse pitch and four flutes, it delivers efficient material removal with consistent chip formation.

• Diameter: 12.0 mm
• Length of Cut: 26 mm
• Total Length: 83 mm
• Reach (with neck relief): 37.5 mm
• Shank: Weldon, 12 mm flat
• Material: HSS-E, powder-metallurgical (Primax) with bright finish
• Flutes: 4-flute configuration
• Roughing Profile: NRA asymmetrical coarse pitch
• Helix: 35° for efficient chip evacuation
• Rake Angle: 12° to enhance cutting action on shoulders and slots
• Standard: DIN 844 K
• Applications: Shoulder milling, slot milling, and ramping
• Recommended Materials: Steel, cast steel, ferritic/mmartensitic/super-austenitic stainless steels, duplex stainless steel, cast iron, copper alloys, and high-temperature alloys

Designed for rugged roughing in a variety of tough materials, this end mill combines the wear resistance and hot-hardness of HSS-E with the uniform microstructure of powder metallurgy. The straight, flat Weldon shank ensures secure clamping for repeatable performance, while the optimized geometry minimizes built-up edge and maintains steady cutting forces across deep pockets and long ramps. The tool is well-suited for high-throughput machining environments where consistent MRR and reliable tool life are essential.