Dormer Pramet C305 3.5mm HSS-E-Powder Metal Primax Flatted Shank 3 Flute Standard Length Slot Drill DIN 844 K

Dormer Pramet C305 3.5 mm HSS-E Powder Metallurgical Primax slot drill with a flatted 6 mm Weldon shank. This 3‑flute, standard-length tool is designed for precise slot cutting, shoulder milling, and ramping in a range of steels and alloys. Built to strict DIN 844 K specifications, it delivers reliable performance in free machining and high-temperature materials.

• Diameter: 3.5 mm
• Length of Cut: 10 mm
• Overall Length: 54 mm
• Shank: 6 mm Weldon shank (flat for secure seating)
• Flutes: 3-flute design for efficient chip removal
• Material: HSS‑E with powder metallurgy, Primax finish
• Helix: 30° for smooth cutting action
• Rake Angle: 12° to optimize penetration and finishing
• Standard: DIN 844 K compatibility
• Applications: Shoulder milling, slot milling, and ramping
• Supported Materials: Free‑machining and plain carbon steel, copper and copper alloys, plus Fe‑based, Ni‑based, and Co‑based high‑temperature alloys

Engineered for durability and consistent results, this slot drill maintains precise hole geometry while handling diverse workpieces. The powder‑metallurgical HSS‑E substrate provides improved hardness and wear resistance, helping to extend tool life in challenging materials. Its compact 10 mm cut depth and robust 6 mm shank make it a versatile choice for clean, accurate slots and flat‑bottom features in both fabrication and machining setups.