The Dormer Pramet C11 5/16 Inch HSS-E Powder Metallurgy Slot Drill is an extra-short, two-flute tool designed for precise slot and shoulder milling in tight spaces. Built for free-machining steel and copper alloys, it combines the toughness of HSS-E with the accuracy of a DIN 327 D specification and a robust Weldon shank.

• Diameter: 5/16" (approx. 8.0 mm)
• Length of cut: 11 mm
• Overall length: 61 mm
• Shank: Weldon, 10 mm
• Material: HSS-E powder metallurgy with bright finish
• Flutes: 2
• Helix angle: 30°
• Rake angle: 12°
• Standard: DIN 327 D
• Applications: Slot milling, shoulder milling, and ramping in free-machining steel and copper/copper alloys

In practice, this slot drill provides precise slotting and clean shoulder cuts in confined pockets, with reduced deflection thanks to its short, rigid geometry. The 30° helix promotes efficient chip evacuation and smooth cutting in both steel and copper alloys, while the 12° rake angle enhances cutting action and finish quality. The powder-metallurgical HSS-E core offers improved wear resistance and toughness for longer tool life in demanding milling tasks. With a secure 10 mm Weldon shank, it delivers dependable clamping in CNC and manual machines, making it a reliable choice for precise pocketing, connector slots, and small-form components that require consistent results.