The Dormer Pramet C306 is an extra-short, 3-flute slot drill engineered for precise shoulder milling, slot milling, and ramping in confined spaces. Designed for free machining steels and copper alloys, it delivers dependable efficiency and a clean finish in demanding production tasks.

• Diameter: 30.0 mm
• Length of cut: 26 mm
• Overall length: 102 mm
• Reach with neck relief: 45.5 mm
• Shank: 25 mm Weldon shank with flatted surface for secure seating
• Flutes: 3-flute design for robust cutting and good chip evacuation
• Material & finish: Powder metallurgical HSS-E with bright finish
• Geometry: 30° helix and 12° rake angle optimized for shoulder milling, slot milling, and ramping
• Standard: DIN 327 D
• Application: Free machining and plain carbon steel, copper and copper alloys

With its compact length and neck relief, this drill provides rigidity in tight pockets and shallow slots, reducing deflection and improving surface finish. The powder-metallurgical HSS-E substrate offers enhanced edge strength and wear resistance for longer tool life under continuous milling. The negative impact of chatter is minimized by the tool’s 3-flute geometry and precise 30° helix, while the Weldon shank ensures repeatable, secure clamping in standard holders. This combination makes the C306 a reliable choice for production milling tasks that demand accuracy, durability, and consistent results in common engineering materials.