The Dormer Pramet C346 9.0mm HSS-E flatted shank 3-flute long series slot drill is designed for shoulder milling and slot milling in free machining steels and copper alloys. With a 10 mm Weldon shank and a long body, it delivers reliable rigidity and reach for deep slots.

• Diameter: 9.0 mm
• Flutes: 3
• Length of Cut: 38 mm
• Overall Length: 88 mm
• Shank: Flatted Weldon, 10 mm
• Material: Cobalt-based HSS-E with bright finish
• Helix Angle: 30°
• Rake Angle: 12°
• Standard: DIN 844 L
• Applications: Shoulder milling and slot milling in free machining steel and copper alloys

Benefits: This long-series end mill excels at deep-slot work without sacrificing edge strength, thanks to its cobalt-based HSS-E composition. The 3-flute geometry balances material removal with surface finish, while the 30° helix promotes efficient chip evacuation in copper alloys and free machining steels. The 12° rake further improves cutting action on shoulder faces, and the DIN 844 L compatibility ensures smooth clamping in standard tool holders. Ideal for shops performing precise slotting and shoulder milling on parts with tight tolerances, it helps reduce cycle times and improve part quality.