Engineered for precision shoulder and slot milling, the Dormer Pramet C346 10.0 mm HSS-E Flatted Shank 3 Flute Long Series Slot Drill is built for demanding metalworking tasks in free machining steels and copper alloys.

• Diameter: 10.0 mm
• Length of Cut: 45 mm
• Overall Length: 95 mm
• Shank: 10 mm Weldon flat shank
• Flute Count: 3
• Material: HSS‑E cobalt-based for enhanced hot hardness
• Finish: Bright finish for reliable chip control and smooth machining
• Helix: 30° helix, optimized for efficient chip evacuation
• Rake Angle: 12° for improved cutting efficiency in soft to medium-hard metals
• Series: Long series end mill designed for deeper slots and pockets
• Standard: DIN 844 L, ensuring compatibility with common tool holders and equipment
• Applications: Shoulder milling and slot milling in free machining steel and copper/copper alloys

This tool delivers dependable performance where deep slots and accurate shoulders are required. The cobalt-enriched HSS alloy provides greater heat resistance and wear life than standard high-speed steel, while the long series design enables deeper reach without compromising rigidity. The 3-flute geometry supports steady material removal and a cleaner finish, making it a reliable choice for precision milling tasks in CNC and manual machines alike. The Weldon shank offers a secure fit under demanding cutting conditions, reducing slips and chatter during heavy milling operations.