The Dormer Pramet C139 20.0 mm HSS-E-Powder Metallurgical TiCN slot drill is a high‑precision two‑flute tool designed for slot milling, shoulder milling, and ramping. Built for durability and consistency, it features a Weldon 20 mm shank and DIN 844 K compliance for reliable seating in standard holders.

• Diameter: 20.0 mm
• Flutes: 2-flute design for efficient chip evacuation and stable cutting
• Length of cut: 38 mm for deeper slots and ample reach in pockets
• Overall length: 104 mm with neck relief to minimize rubbing
• Reach with neck relief: 53.5 mm for added clearance in tight pockets
• Shank: 20 mm Weldon shank for secure tool retention
• Material & coating: HSS‑E with TiCN coating (powder metallurgical process) for enhanced hardness and wear resistance
• Helix angle: 30° for smooth entry and effective chip formation
• Rake angle: 12° to optimize cutting action on shoulders and slots
• DIN standard: 844 K compliance ensuring compatibility with common milling setups
• Material compatibility: suited for free machining steels, plain carbon and alloy steels, cast iron, copper and copper alloys, and titanium alloys

This slot drill is engineered to deliver reliable performance across a range of metals common in both maintenance and production environments. The TiCN coating reduces friction and extends tool life, while the powder‑metallurgical HSS‑E substrate provides a tougher, more wear‑resistant cutting edge. The combination of a robust two‑flute geometry and a generous neck relief minimizes deflection and rubbing in deep slots, helping you achieve accurate slot widths and clean shoulder surfaces with each pass.