The Dormer Pramet C505 8.0mm HSS-E Ball Nose End Mill is a compact, high-precision cutter designed for 3D contouring and copy milling in free‑machining steels and copper alloys. With an 8 mm diameter and a true ball-end radius, it delivers smooth, accurate surfaces on complex profiles.

• Diameter: 8.0 mm
• Ball Nose Radius: 4.0 mm full-profile radius
• Length of Cut: 19 mm
• Overall Length: 69 mm
• Flutes: 2
• Shank: 10 mm Weldon shank
• Material: HSS‑E cobalt-based with bright finish
• Helix Angle: 30°
• Rake Angle: 12°
• DIN Standard: 844 K
• Application: copy milling in free‑machining steel and copper/copper alloys

Designed for reliable performance in demanding milling tasks, this end mill excels at creating smooth 3D contours, pockets, fillets, and other intricate features. The cobalt-based HSS‑E construction maintains edge hardness under heat, delivering longer tool life when cutting tougher materials. The 30° helix and 12° rake optimize chip evacuation and cutting efficiency, helping minimize built‑up edge and improve surface finish. A 10 mm Weldon shank ensures a secure, repeatable grip in standard end-mill holders, while the DIN 844 K specification guarantees compatibility with common tooling setups. Ideal for engineers and machinists performing copy milling, pocketing, and contouring in free‑machining steel and copper alloys.