The Dormer Pramet C306 22.0 mm HSS-E powder metallurgical Primax slot drill is built for precise slotting, shoulder milling, and ramping in free-machining steels and copper alloys. With a compact extra-short form and a flat shank, it delivers reliable performance in tight pockets and tight tolerances.

• Diameter: 22.0 mm
• Length of cut: 22.0 mm
• Overall length: 88 mm
• Reach / neck relief: 37.5 mm
• Shank: Weldon, 20 mm
• Material: HSS‑E powder metallurgy with bright finish
• Flutes: 3
• Helix angle: 30°
• Rake angle: 12°
• Standard: DIN 327 D
• Applications: Shoulder milling, slot milling, ramping
• Material compatibility: Free machining steel and copper/copper alloys

Designed for rigidity and consistent results, the 3-flute geometry provides efficient chip evacuation and a smooth cut in slots and pockets. The powder-metallurgical HSS‑E substrate offers improved hardness and wear resistance for longer tool life in demanding machining environments. A 30° helix and 12° rake reduce cutting forces, promote a clean finish, and minimize built‑up edge, while the 20 mm Weldon shank ensures secure mounting in standard holders. This DIN 327 D drill is a dependable choice for high‑throughput slotting, precise shoulder milling, and controlled ramping in free‑machining steels and copper alloys.