Seco 17010379 Roughing End Mill 5/8 in 4 Flute Cobalt

Product Description

The SECO 17010379 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 and wear resistance that holds up in harder workpiece materials where standard HSS tools fall short. The cutter measures 0.625 inches in diameter with a 1.625-inch length of cut and a 3.75-inch overall length. Its four-flute, right-hand spiral geometry and 30-degree maximum helix angle are configured for efficient chip evacuation during roughing passes. This tool is installed and operated by machinists and tool-and-die professionals on manual or CNC milling machines.

The 17010379 is suited for roughing cuts on ferrous and non-ferrous metals in job shop, production machining, and maintenance-repair environments. It carries a bright, uncoated finish and is intended for use without coolant-through capability. The regular-length flute type and non-variable helix design make it a straightforward drop-in for standard roughing applications where a corncob-style chipbreaker profile handles high chip loads efficiently.

Key Features

• M42 cobalt construction for elevated heat and wear resistance over standard HSS
• 4-flute, right-hand spiral with 30-degree maximum helix angle for efficient chip evacuation
• 5/8 inch (0.625 inch) diameter with matching 5/8 inch shank for concentric fitment
• 1.625-inch length of cut for moderate-depth roughing passes
• Single-end design, bright/uncoated finish, no coolant-through requirement
• SECO REM445 series for consistent dimensional repeatability

Compatibility

Designed as a standard roughing end mill for use in milling machine collets, end mill holders, and chucks accepting a 0.625-inch straight shank. Part of the SECO REM445 series.

Installation Notes

Installation is performed by qualified machinists following standard toolroom practices. Secure the shank fully in a clean, properly sized collet or end mill holder before operation and verify runout before cutting. Confirm spindle speeds and feed rates match the workpiece material and machine specifications before beginning a roughing pass. Do not exceed the rated helix angle or depth-of-cut limits for the holder and machine combination in use.