Dormer Pramet C505 10.0mm HSS-E Flatted Shank 2 Flute Ball Nosed Standard Length Slot Drill DIN 844 K

The Dormer Pramet C505 10.0mm HSS-E flatted shank ball-nosed slot drill is a compact, high‑precision cutting tool designed for copy milling and slotting in steel and copper alloys. Built for machinists who need reliable performance in free‑machining materials, it delivers smooth contours and consistent finishes.

• Diameter: 10.0 mm
• Length of Cut: 22 mm
• Overall Length: 72 mm
• Radius: 5 mm full profile radius
• Flutes: 2-flute ball-nose design for clean, curved profiles
• Shank: 10 mm Weldon shank for secure clamping
• Material: HSS‑E cobalt-based with bright finish
• Helix angle: 30° for efficient chip evacuation
• Rake angle: 12°
• Standard: DIN 844 K
• Application: Copy milling and slotting in free‑machining steel and copper/copper alloys

Thanks to its 2‑flute configuration, this tool delivers efficient material removal while preserving surface finish on intricate 3D profiles. The ball‑nose geometry creates smooth contours ideal for pocketing, blending, and copy milling. The 10 mm Weldon shank provides robust torque transmission, minimizing runout when used with standard collet chucks or end mill holders. The cobalt‑based HSS‑E substrate offers improved hot hardness for longer tool life in harder steels and copper alloys, while the bright finish helps resist built‑up edge during moderate‑duty cuts. For best results, adjust feed and speed to the material and avoid excessive cutting forces in tight radii. This tool is a reliable choice for shops requiring consistent geometry in steel and copper milling tasks.