Meet the Dormer Pramet C306 25.0mm HSS-E-Powder Metallurgically produced Primax Flatted Shank 3-Flute Short Series Slot Drill DIN 327 D — a compact, high-precision tool built for tight pockets and demanding milling tasks. Designed for shoulder milling, slot milling, and ramping in free machining steels and copper alloys, it combines a robust core with a geometry that supports clean, consistent results.

• Diameter: 25 mm
• Flutes: 3-flute design for efficient chip evacuation and smoother cutting
• Length of cut: 26 mm, ideal for shallow slots and precise shoulder milling
• Overall length: 102 mm, offering extended reach in restricted spaces
• Reach with neck relief: 45.5 mm for access to deeper features without tool interference
• Shank: Weldon 25 mm for secure clamping and repeatable accuracy
• Material: HSS-E with powder metallurgical structure and a bright finish for enhanced wear resistance
• Helix angle: 30° to optimize cutting action and chip control
• Rake angle: 12° to improve metal removal in joints, shoulders, and slots
• Standard: DIN 327 D compatibility for broad holder interchangeability
• Geometry usage: Suitable for shoulder milling, slot milling, and ramping operations
• Materials supported: Free machining steels, plain carbon steels, copper and copper alloys
• Brand/Line: Dormer Pramet Primax

Designed for dependable performance in tight tolerances, this slot drill helps you achieve accurate pocket depths and clean shoulders without overextending your setup. The extra-short series minimizes tool deflection in confined areas, while the 30° helix and 12° rake balance cutting forces to deliver a stable, efficient cut across compatible materials. The powder metallurgical HSS-E core combines toughness and wear resistance, extending tool life under routine milling workloads. A bright finish reduces buildup on the cutting edges and supports consistent chip evacuation. The Weldon shank ensures a secure, repeatable grip in standard holders, and the neck relief enables ramping and deeper reach in constrained geometries. This Drucker Pramet C306 is a reliable choice for shops prioritizing precision, longevity, and versatility in slot and shoulder milling.