Seco 17011828 Square End Mill 1 Inch 4 Flute Cobalt

Product Description

The SECO 17011828 is a single-end, 4-flute cobalt square end mill designed for material removal in milling operations across a range of metalworking applications. Built from M42 cobalt high-speed steel, it delivers hardness and heat resistance suited to tough ferrous and non-ferrous materials. The mill measures 1 inch in cutting diameter with a 2-inch length of cut and a 4.5-inch overall length. The 30-degree helix spiral flute geometry promotes efficient chip evacuation and stable cutting action. The bright uncoated finish is standard for this series. It is installed and operated by machinists and tool-and-die professionals on manual or CNC milling machines.

This end mill is rated for use on steel, stainless steel, cast iron, aluminum and non-ferrous metals, and high-temperature alloys, covering ISO material groups P, M, K, N, and S. The SPC408 series short-length configuration suits general-purpose face milling, slotting, profiling, and peripheral milling in job shop and production environments. The centercutting geometry allows plunge entry directly into the workpiece without a pre-drilled hole. Right-hand cut and right-hand flute direction are standard for conventional milling machine setups.

Key Features

• M42 cobalt construction for improved red hardness over standard HSS
• 4-flute spiral design with 30-degree helix for balanced chip load and surface finish
• Centercutting capability allows direct plunge milling
• Bright uncoated finish — no coating buildup risk on aluminum or non-ferrous stock
• 1 inch shank diameter with tight tolerance for secure tool holder engagement
• Short-length SPC408 series geometry reduces deflection in standard-depth cuts

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for standard 1-inch-bore milling chucks, collet holders, and end mill adapters used with manual and CNC vertical milling machines accepting 1-inch straight shanks.

Installation Notes

Installation is performed by a qualified machinist. The machine spindle must be fully stopped and locked out before inserting or removing the end mill from the tool holder. Confirm shank seating depth and runout with a dial indicator before cutting — maximum TIR for this tool is 0.0010 inches per specification. Follow shop-standard torque procedures for the tool holder style in use; do not exceed holder manufacturer specifications.