The Dormer Pramet C299 4.0mm HSS-E-Powder End Mill is a compact, high-precision cutter built for small-diameter milling in a wide range of materials. Designed for shoulder milling, slot milling, and ramping, it delivers reliable performance in tight spaces and demanding applications.

• Diameter: 4.0 mm
• Flutes: 3-flute design for rigidity and efficient chip evacuation
• Length of cut: 11 mm
• Overall length: 55 mm
• Shank: Weldon, 6 mm
• Material: Powder-metallurgical HSS-E with bright finish
• Helix angle: 45°
• Rake angle: 12° (optimized for shoulder milling)
• DIN standard: 844 K
• Applications: Shoulder milling, slot milling, and ramping in a wide range of steels and alloys
• Compatible materials: Plain carbon steel, alloy steel, tool steel, ferritic/martensitic/super-austenitic stainless steels, duplex or precipitation-hardening stainless steel, cast iron, copper and copper alloys, and high-temperature alloys

This end mill leverages powder-metallurgical HSS-E to combine toughness with wear resistance, helping you achieve clean cuts and consistent tool life even in tough materials. The bright finish reduces built-up edge and promotes smoother chip flow, while the 6 mm Weldon shank ensures solid clamping and stability during aggressive milling. With a 45° helix and 12° rake angle, it delivers efficient chip evacuation and controlled cutting action across a spectrum of milling tasks, making it a dependable choice for precision work in steel, stainless steel, cast iron, and beyond.