The Dormer Pramet C11 5/8 Inch HSS-E-Powder Metallurgical Short Series Slot Drill is engineered for precise slot milling, shoulder milling, and ramping in free machining steel and copper alloys. With a compact, extra-short form and reliable DIN 327 D compliance, it’s built for tight workspaces and demanding machining tasks.

• Diameter: 5/8" (16 mm)
• Length of cut: 19 mm
• Overall length: 79 mm
• Reach (neck relief): 30.5 mm
• Shank: Weldon, 16 mm
• Standard: DIN 327 D
• Material: HSS-E powder metallurgical with bright finish
• Helix angle: 30°
• Rake angle: 12° (shoulder milling, slot milling, and ramping)
• Flutes: 2
• Series: Short
• Applications: Shoulder milling, slot milling, ramping
• Compatible materials: Free-machining steel and copper or copper alloys

Designed for durability and consistent performance, this slot drill pairs a powder-metallurgical HSS-E core with a bright finish to resist wear and maintain sharpness through repetitive cutting cycles. The 2-flute geometry fosters efficient chip removal and stable cutting in narrow slots and shoulders, while the 30° helix and 12° rake angle optimize cutting action for clean profiles and steady feeds. Ideal for shop environments where precision, repeatability, and reliable tool life matter in small-diameter slotting and ramping operations.