Seco 17010365 Roughing End Mill 5/16 in 4 Flute Cobalt

Product Description

The SECO 17010365 is a single-end cobalt roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention when cutting ferrous metals, stainless steels, and other tough alloys. The mill measures 0.3125 inches in diameter with a 1.375-inch length of cut and a 3.125-inch overall length. Four right-hand spiral flutes with a 30-degree maximum helix angle and a bright, uncoated finish make this tool well suited for roughing passes where chip evacuation and tool life under load are the primary concerns. Machinists and tool-and-die professionals reach for this style of end mill when removing stock quickly before a finishing pass.

This roughing end mill fits standard milling machine setups and CNC machining centers using a 0.375-inch shank. Its regular-length geometry works in general shop applications including slotting, profiling, and peripheral roughing cuts in ferrous and non-ferrous materials. The non-centercutting design means it is not intended for direct plunge cuts. The REM445 series designation places this tool in a recognized roughing end mill family appropriate for production and maintenance machining environments.

Key Features

• M42 cobalt high-speed steel construction for heat and wear resistance in tough alloys
• Four right-hand spiral flutes with 30-degree maximum helix angle for efficient chip evacuation
• Bright, uncoated finish suitable for a wide range of ferrous and non-ferrous materials
• 0.375-inch straight shank fits standard collets and end mill holders
• Single-end, regular-length geometry for general roughing and profiling operations
• Non-centercutting design — ramp or helical entry required for plunge applications

Compatibility

Designed as a direct-fit replacement or standard tooling selection for milling machines and CNC machining centers accepting a 0.375-inch shank end mill holder or collet.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before seating or removing the tool from its holder. Verify shank seating depth and runout with a dial indicator before commencing a cut. Consult machine tool manufacturer guidelines for recommended speeds and feeds when using cobalt end mills on specific workpiece materials.