Durable and precise, the Dormer Pramet C346 6.0 mm HSS-E slot drill is a long-series, 3-flute cutter engineered for shoulder milling and slot milling in free machining steel and copper alloys. Featuring a 6 mm Weldon (flat) shank and a DIN 844 L standard, it delivers reliable performance in deep slots and tight shoulders.

• Diameter: 6.0 mm
• Flutes: 3-flute geometry for smooth cutting and steady chip evacuation
• Length of cut: 24 mm
• Overall length: 68 mm
• Shank: 6 mm Weldon (flat-shank) for secure clamping and precise seating
• Material and finish: HSS-E cobalt-based steel with bright finish for increased wear resistance
• Helix angle: 30° to improve chip flow and cutting action
• Rake angle: 12° to enhance performance in shoulder and slot milling
• Standard: DIN 844 L for broad compatibility with holders and CNC tooling
• Applications: Shoulder milling and slot milling in free machining steel and copper or copper alloys

This tool is designed to deliver predictable, repeatable results in everyday milling tasks. The long-series length provides reach for deeper slots and pockets, while the cobalt-based HSS-E composition offers improved wear resistance under typical feeds and speeds used for free machining steels and copper alloys. The 30° helix and 12° rake angle support efficient chip evacuation and stable cutting in both shoulder and slot milling operations, helping you achieve clean slots and precise shoulders with minimal tool deflection. Ideal for shops needing a reliable, standard-compliant cutter that performs consistently across common free-cutting materials.