Dormer Pramet C601 5/16 x 3/8 Inch HSS Flatted Shank 2 Flute Slot Drill Regular Length

Meet the Dormer Pramet C601 5/16 x 3/8 Inch HSS Flatted Shank 2 Flute End Mill — a reliable, regular-length tool built for precise shoulder milling, slot milling, and ramping in free-machining steel. Designed for both manual and CNC setups, it puts dependable performance in your everyday machining workflow.

• Diameter: 5/16" (0.3125")
• Flutes: 2-flute end mill for efficient cutting and chip clearance
• Length of Cut: 9/16" (14.3 mm)
• Overall Length: 2-1/2" (63.5 mm)
• Shank: 3/8" Weldon shank for rigid, secure clamping
• Material & Finish: High-Speed Steel (HSS) with a bright finish for durability and easy edge inspection
• Helix Angle: 30° for smooth entry, good surface finish, and stable cutting
• Applications: Shoulder milling, slot milling, and ramping in free-machining steel
• Standards: ANSI-compliant geometry for broad compatibility with standard holders and collets

This end mill is tailored to deliver consistent results in soft to medium-strength steels, where two flutes and a robust HSS core excel at chip evacuation and steady cutting action. The 30° helix promotes efficient material removal with reduced cutting forces, while the flatted 3/8" Weldon shank provides a secure grip in common toolholding systems. With its regular-length form, the C601 offers reliable rigidity for pocketing, slots, and shoulder features without unnecessary elongation.