The Dormer Pramet C306 5.0 mm slot drill is an ultra-compact, high-precision tool designed for tight-slot work, shoulder milling, and ramping. Built for engineers and machinists who demand reliable performance in free-machining steels and copper alloys, this 3-flute, extra-short series drill delivers clean slots with consistent geometry.

• Diameter: 5.0 mm
• Overall length: 52 mm
• Length of cut: 8 mm
• Flutes: 3
• Shank: Weldon, 6 mm, flatted
• Material: HSS-E powder-metallurgical with bright finish
• Helix angle: 30°
• Rake angle: 12°
• DIN standard: DIN 327 D
• Applications: Shoulder milling, slot milling and ramping
• Recommended materials: Free-machining steels and copper or copper alloys

Designed for durability and precise chip control, the C306 uses powder-metallurgical HSS-E to balance hardness with toughness. The bright finish reduces built-up edge tendencies, while the 30° helix and 12° rake angle optimize cutting forces for smoother ramping and cleaner slots. The Weldon 6 mm flatted shank ensures secure clamping for accurate, repeatable performances in both CNC and manual setups.