The Dormer Pramet C139 7.5 mm slot drill is a reliable, high-precision tool designed for slot milling, shoulder milling, and ramping in free-machining and durable metals. Built with HSS-E powder metallurgy and TiCN coating, it’s crafted to deliver consistent slots with solid tool life in production environments.

• Diameter: 7.5 mm
• Length of cut: 16 mm
• Overall length: 66 mm
• Shank: Weldon, 10 mm
• Material: HSS-E (powder-metallurgically produced) for improved toughness
• Coating: TiCN for enhanced wear resistance and lower friction
• Flutes: 2 flutes
• Helix angle: 30° for efficient chip evacuation and smooth cutting action
• Rake angle: 12° to optimize material shear
• DIN standard: 844 K
• Design purpose: ideal for shoulder milling, slot milling, and ramping
• Supported materials: plain carbon and alloy steel, cast iron, copper or copper alloys, and titanium or titanium alloys

This 2-flute, standard-length drill balances rigidity and reach, enabling clean, accurate slots in a variety of metals. The 10 mm Weldon shank ensures secure clamping in compatible holders, while the 16 mm cutting length provides enough depth to complete precise slots without sacrificing rigidity. The combination of powder-metallurgical HSS-E and TiCN coating reduces wear, improves heat resistance, and extends tool life in demanding milling operations.