Seco 17016370 Square End Mill 5/16 in 2 Flute Cobalt Ticn

Product Description

The SECO 17016370 is a 2-flute cobalt square end mill designed for material removal in demanding metalworking applications. Built from M42 cobalt high-speed steel and finished with a TiCN (Titanium Carbonitride) coating, this tool delivers increased wear resistance and heat tolerance compared to standard HSS tooling. The 5/16 inch cutting diameter, 9/16 inch length of cut, and 30-degree helix angle make it well suited for slotting, profiling, and peripheral milling operations. It is centercutting, allowing direct plunge entry into workpieces. The right-hand cut and right-hand spiral flute geometry promotes efficient chip evacuation and reduces tool deflection during cuts.

This end mill belongs to the SP205 short series and is intended for milling steel, stainless steel, cast iron, and high-temperature alloys — corresponding to ISO material groups P, M, K, and S. The 3/8 inch shank diameter fits standard collet chucks and end mill holders commonly found on vertical machining centers, knee mills, and CNC milling machines. The short overall length of 2-5/16 inches provides rigidity in setups where reach requirements are minimal. This tool is typically installed and operated by machinists and CNC programmers in job shop, production, and maintenance machining environments.

Key Features

• M42 cobalt construction resists heat and wear in ferrous and high-temp alloy applications
• TiCN coating extends tool life and reduces built-up edge on steel and stainless steel
• Centercutting geometry allows direct plunge milling without pre-drilling
• 30-degree helix angle promotes smooth cutting action and efficient chip flow
• Right-hand cut with right-hand spiral flutes for use in conventional milling setups
• Short series length provides added rigidity in low-clearance or high-precision setups

Compatibility

Designed for use in standard 3/8 inch collet chucks and end mill holders on vertical machining centers, knee mills, and CNC milling platforms. Suitable for milling steel, stainless steel, cast iron, and high-temperature alloys per ISO material groups P, M, K, and S.

Installation Notes

Installation is performed by a machinist or CNC operator. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before seating the shank. Torque the collet nut to the tool holder specification provided by the holder manufacturer. Verify runout does not exceed the specified TIR maximum of 0.0010 inches before beginning a cut.