Seco 17016373 Square End Mill 7/16 Inch 2 Flute Cobalt

Product Description

The SECO 17016373 is a cobalt square end mill designed for material removal in ferrous machining applications. Built from M42 cobalt high-speed steel and coated with TiCN (Titanium Carbonitride), this tool delivers improved wear resistance and longer tool life compared to standard HSS end mills. It features a 7/16 inch cutting diameter, a 13/16 inch length of cut, and a 2-flute, right-hand spiral flute geometry with a 30-degree helix angle. The centercutting design allows plunge cutting. Overall length is 2.5 inches with a 3/8 inch shank diameter. Machinists and tool-and-die shops working with steel, stainless steel, cast iron, and high-temperature alloys use this end mill for slotting, profiling, and peripheral milling operations.

The 17016373 belongs to SECO's SP205 series, a short-length fractional inch end mill line intended for general-purpose milling in shop and production environments. The short overall length improves rigidity and reduces deflection when cutting harder materials such as stainless steel and high-temp alloys. This tool fits standard 3/8 inch collet chucks and end mill holders used on vertical machining centers, knee mills, and CNC milling machines. It is sold as a single-end tool, meaning once the cutting end is worn, the tool is replaced rather than reindexed.

Key Features

• M42 cobalt substrate for elevated heat and wear resistance versus M2 HSS
• TiCN coating reduces friction and extends tool life in ferrous materials
• Centercutting geometry permits direct plunge entry without a pre-drilled hole
• 30-degree right-hand spiral flute for efficient chip evacuation
• Short length-of-cut design maximizes rigidity and minimizes deflection
• TIR maximum of 0.0010 inches for consistent dimensional accuracy

Compatibility

Rated for primary workpiece materials including steel (P), stainless steel (M), cast iron (K), and high-temperature alloys (S) per ISO material classification. Fits any standard 3/8 inch collet or end mill holder. Part of the SECO SP205 fractional inch series.

Installation Notes

Installation and use of this end mill should be performed by qualified machinists familiar with milling machine setup and cutting tool safety. Ensure the spindle is fully stopped and locked out before mounting or removing the tool from its holder. Verify collet and holder condition before use — a worn or contaminated collet seat can introduce runout beyond the rated TIR maximum and accelerate tool wear. Set feeds and speeds appropriate to the workpiece material, tool diameter, and machine rigidity; consult the machine manufacturer's guidelines and SECO tooling data for recommended cutting parameters.