The Dormer Pramet C139 6.0mm slot drill is a compact two-flute tool designed for slot milling, shoulder milling, and ramping in a range of metals. With a TiCN-coated HSS-E body and a 6mm Weldon shank, it’s built for reliable, precise milling in everyday shop tasks.

• Diameter: 6.0 mm
• Length of cut: 13 mm
• Overall length: 57 mm
• Shank: Weldon 6 mm
• Material and coating: HSS-E with powder metallurgy and TiCN coating
• Flutes: 2
• Helix angle: 30°
• Rake angle: 12°
• Standard: DIN 844 K
• Applications: Slot milling, shoulder milling, ramping
• Materials: Free-machining plain carbon steel, alloy steel, cast-iron, copper/copper alloys, titanium/titanium alloys

The TiCN coating reduces friction and enhances wear resistance, helping produce cleaner slots and smoother finishes even in tougher metals. The powder-metallurgical HSS-E core provides toughness and stable performance across repeated passes, while the 30° helix and 12° rake angle optimize cutting action for efficient chip formation and steady engagement. A secure Weldon 6 mm shank ensures reliable clamping for repeatable depth control, and the tool’s geometry supports efficient chip evacuation in narrow slots and shallow pockets. Ideal for shops performing light to mid-depth slotting and shoulder milling in steel, cast iron, copper alloys, and titanium alloys, the C139 offers a dependable, single-tool solution for standard DIN 844 K holders.