The Dormer Pramet C305 15.0 mm HSS-E Powder Metall Primax Flatted Shank 3-Flute Slot Drill is a precise, all-purpose tool designed for slot and shoulder milling, as well as ramping, in a range of steels and alloys. Built for reliability in free‑machining and high‑temperature materials, it delivers steady performance from first cut to finish.

• Diameter: 15.0 mm
• Flutes: 3-flute geometry optimized for slot milling and shoulder milling with efficient chip evacuation
• Length and reach: 26 mm length of cut; 83 mm overall length; 37.5 mm reach with neck relief
• Shank: Weldon shank Ø12 mm, DIN 844 K standard
• Material and finish: HSS-E powder metallurgical with bright finish for enhanced hardness and wear resistance
• Geometry: 30° helix and 12° rake angle tailored for shoulder milling, slot milling, and ramping
• Applications: suitable for free machining and copper/copper alloys, Fe-based, Ni-based, and Co-based high‑temperature alloys

This tool is engineered to produce clean slots and accurate shoulders with minimal runout and deflection. The powder-metallurgical HSS‑E core delivers improved hardness and wear resistance, extending tool life in challenging materials. The 3-flute design strikes a balance between aggressive material removal and a smooth finish, while the Weldon shank provides secure clamping in standard milling machines. Whether slotting, shoulder milling, or ramping, this drill maintains consistent performance across a variety of alloys.