Dormer Pramet's C306 3.0 mm HSS-E powder-metallurgically enhanced slot drill delivers precise, reliable performance in tight spaces. Designed for shoulder milling, slot milling, and ramping, it’s ideal for free‑machining and plain carbon steels as well as copper and copper alloys.

• Diameter: 3.0 mm
• Length of cut: 5 mm
• Overall length: 49 mm
• Flutes: 3-flute design for efficient chip evacuation and smooth cutting
• Shank: 6 mm Weldon shank, DIN 327 D compliant
• Material and finish: HSS‑E with powder metallurgy and a bright finish for wear resistance
• Cutting geometry: 30° helix and 12° rake angle designed for shoulder/slot milling and ramping
• Category: Primax line slot drill with flat/welded shank design for secure seating
• Applications: Shoulder milling, slot milling and ramping in free machining and plain carbon steel, copper and copper alloys

This compact, high‑precision drill minimizes deflection in small slots, delivers clean slot walls, and maintains stability through its three‑flute geometry. The powder‑metallurgy HSS‑E composition delivers improved wear resistance and long tool life, even in challenging materials. The Weldon shank provides repeatable clamping and dependable alignment, while the DIN 327 D standard ensures compatibility with a wide range of holders. Whether upgrading a micro‑machining workflow or outfitting a compact tool set, this slot drill offers reliable performance in a single, purpose‑built solution.