Designed for precision slot milling in non-ferrous metals, the Dormer Pramet C159 8.0mm HSS‑E slot drill is built for shoulder milling, slot milling, and ramping with dependable repeatability. With a 10 mm Weldon shank and DIN 844 K compliance, it pairs a robust two‑flute design with cobalt‑based HSS‑E for demanding shop-floor use.

• Diameter: 8.0 mm
• Length of cut: 19 mm
• Overall length: 69 mm
• Shank: Weldon, 10 mm
• Material: HSS‑E cobalt‑based, bright finish
• Flutes: 2
• Helix angle: 40°
• Rake angle: 20°
• Standard: DIN 844 K
• Applications: Shoulder milling, slot milling, ramping in non‑ferrous metals
• Brand: Dormer Pramet

In practice, this slot drill delivers clean, accurate slots with reliable edge retention under the heat generated by slotting aluminum, copper, and other non‑ferrous alloys. The 2‑flute geometry promotes efficient chip removal in narrow slots, while the 40° helix and 20° rake angle optimize cutting action for smooth finishes and reduced feed pressures. The cobalt‑based HSS‑E composition enhances wear resistance and tool life in continuous milling cycles, and the bright finish helps visually track wear and coolant coverage. The Weldon shank ensures a secure grip in standard collets and end mill holders, minimizing runout during aggressive milling. The DIN 844 K standard guarantees compatibility with common tool holders, enabling quick changeovers for multi‑step aluminum fabrication.