Seco 17011739 Square End Mill 0.5in 4 Flute Cobalt SPC408

Product Description

The SECO 17011739 is a single-end, square-profile cobalt end mill designed for material removal in milling operations on machining centers and manual mills. Built from M42 cobalt high-speed steel, this tool delivers improved heat and wear resistance compared to standard M2 HSS. It features 4 spiral flutes with a 30-degree helix angle and a bright, uncoated finish. The 0.5 inch cutting diameter, 3 inch length of cut, and 5 inch overall length make it well suited for slotting, profiling, and plunge cuts in a range of workpiece materials. It is centercutting, allowing direct plunge entry without a pre-drilled hole.

This end mill is intended for use on ferrous and non-ferrous workpieces including steel, stainless steel, cast iron, aluminum, non-ferrous alloys, and high-temperature alloys. It fits standard 0.5 inch tool holders and collet chucks used in CNC machining centers, knee mills, and manual vertical mills. The SPC408 series targets general-purpose shop use where an uncoated cobalt tool is specified. Machinists working in job shops, toolrooms, and production environments will find this tool appropriate for everyday cutting tasks across multiple material families.

Key Features

• M42 cobalt HSS construction for improved heat resistance over standard HSS
• 4 spiral flutes with 30-degree helix angle for efficient chip evacuation
• Centercutting geometry allows direct plunge entry into workpiece
• Right-hand cut, right-hand flute configuration — standard setup for most vertical mill spindles
• Bright, uncoated finish — no coating buildup concerns when regrinding
• Compatible with steel, stainless steel, cast iron, aluminum, non-ferrous, and high-temp alloys

Compatibility

Designed as an OEM-style replacement or direct-use tooling option in any application calling for a 0.5 inch shank, 0.5 inch diameter, 4-flute cobalt square end mill. Part of the SECO SPC408 series for general-purpose milling.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Secure the shank in a properly sized collet, end mill holder, or Weldon shank holder torqued to the machine manufacturer's specification. Verify tool runout does not exceed 0.001 inch TIR before cutting. Follow your machine tool's lockout and spindle-stop procedures before changing tooling.