The Dormer Pramet C305 13.0 mm HSS-E-Primax slot drill is a compact, three-flute cutting tool designed for shoulder milling, slot milling and ramping. Built to work in free machining steels, copper and copper alloys, as well as Fe-, Ni-, and Co-based high-temperature alloys, it blends precision with durability in a DIN 844 K standard format.

• Diameter: 13.0 mm
• Length of cut: 26 mm
• Overall length: 83 mm
• Reach / neck relief: 37.5 mm
• Shank: Weldon, 12 mm
• Flutes: 3-flute configuration
• Material: HSS-E with Primax powder-metallurgical construction and bright finish
• Helix angle: 30°
• Rake angle: 12° (optimized for shoulder milling, slot milling and ramping)
• Standard: DIN 844 K
• Applications: Shoulder milling, slot milling and ramping in steel, copper and copper alloys, as well as Fe-, Ni- and Co-based high-temperature alloys

The 30° helix and 12° rake geometry support smooth entering cuts, efficient chip evacuation, and clean slot creation even in tougher materials. The Primax powder-metallurgical HSS-E construction provides enhanced hardness and wear resistance, helping extend tool life while maintaining precise geometry across repeated passes. With a robust 12 mm Weldon shank, this tool delivers stable clamping and minimal runout in standard milling setups, making it a reliable choice for production runs and demanding job-shop tasks alike. Its DIN 844 K compliance ensures compatibility with common holders and machine configurations, reducing setup time and ensuring consistent results.