The Dormer Pramet C139 5.0 mm slot drill is a precision two-flute tool designed for accurate slotting, shoulder milling, and ramping in a variety of metals. With a TiCN-coated HSS-E substrate and a robust Weldon-style shank, it’s built for reliable performance in busy workshops and production environments.

• Diameter: 5.0 mm
• Flutes: 2
• Length of cut: 13 mm
• Overall length: 57 mm
• Shank: 6 mm Weldon shank (flatted)
• Material / coating: Powder-metallurgical HSS-E with TiCN coating
• Helix angle: 30°
• Rake angle: 12°
• Standard: DIN 844 K
• Applications: Shoulder milling, slot milling, and ramping in free-machining steels, plain carbon and alloy steels, cast iron, copper and copper alloys, and titanium alloys

Designed for efficient slotting and precise milling, this tool delivers clean slot profiles with controlled chip removal. The TiCN coating reduces wear and friction, extending tool life in tough materials, while the 30° helix and 12° rake optimize cutting action for smooth enters and reduces built-up edge. The 6 mm Weldon shank provides secure, repeatable clamping in standard holders, making it a dependable choice for both setup and on-the-fly changes. Ideal for engineers and machinists working with a range of metallics, from steels and cast irons to copper alloys and titanium, this drill handles deep slots up to 13 mm with consistent accuracy and a solid finish.