Dormer Pramet C305 3.0mm HSS-E-Powder Metal Primax Flatted Shank 3 Flute Standard Length Slot Drill DIN 844 K

The Dormer Pramet C305 is a precision 3.0 mm, three-flute slot drill designed for shoulder milling, slot milling, and ramping. Built from powder-metallurgical HSS-E with a bright finish, it delivers reliable performance on a range of materials while maintaining tight dimensional accuracy.

• Diameter: 3.0 mm
• Flutes: 3
• Length of Cut: 8 mm
• Overall Length: 52 mm
• Shank: Weldon 6 mm
• Material: Powder-metallurgical HSS-E with bright finish
• Helix angle: 30°
• Rake angle: 12°
• Standard: DIN 844 K
• Applications: Shoulder milling, slot milling, and ramping
• Suitable Materials: Free machining and plain carbon steel, copper and copper alloys, Fe-based, Ni-based, and Co-based high-temperature alloys

The 3-flute geometry and 30° helix are optimized for efficient chip evacuation and smooth cutting in narrow slots and shoulders. Powder-metallurgical HSS-E offers enhanced wear resistance and hot hardness, helping maintain consistent tool life across multiple jobs and materials. The 12° rake angle supports strong shearing action, contributing to steady feeds and improved surface finish in both soft steels and tougher alloys. A robust Weldon 6 mm shank ensures secure clamping in standard tool holders, reducing run-out and improving repeatability in production environments.