The Dormer Pramet C306 18.0 mm slot drill is a compact, high-precision tool designed for slot milling, shoulder milling, and ramping in tight spaces. Built to the DIN 327 D standard, it features a Primax flatted shank for secure clamping and consistent performance in demanding setups.

• Diameter: 18.0 mm
• Length of cut: 19.0 mm
• Overall length: 79 mm
• Reach with neck relief: 30.5 mm
• Shank: 16 mm Weldon, Primax flatted shank
• Material: Powder-metallurgical HSS-E with bright finish
• Flutes: 3-flute configuration
• Helix and rake: 30° helix, 12° rake angle
• Standard: DIN 327 D
• Applications: Shoulder milling, slot milling, and ramping
• Materials it’s suited for: Free-machining plain carbon steel and copper/copper alloys

Designed to minimize deflection in tight pockets, this slot drill delivers clean slots and precise shoulders every time. The powder-metallurgical HSS-E core combines wear resistance with excellent edge retention, while the bright finish aids chip formation and reduces built-up edge. The 30° helix supports efficient chip evacuation in slotting and ramping, and the 12° rake angle promotes smooth cutting in both steel and copper alloys. The 16 mm Weldon shank ensures secure seating in standard milling chucks and holders, making it a reliable choice for production and workshop environments that demand repeatable accuracy.