Seco 17004990 Square End Mill 1/4 in 4 Flute Carbide

Product Description

The SECO 17004990 is a single-end square end mill designed for precision milling in composite materials, particularly carbon fiber reinforced polymer (CFRP). Built from micrograin solid carbide and coated with a CVD diamond finish, this tool is engineered to handle the abrasive cutting demands that standard carbide tooling cannot sustain. It runs a 4-flute spiral configuration with a 30-degree helix angle and right-hand cut with right-hand flutes. The 0.25 inch diameter and 0.75 inch length of cut make it well suited for shallow-to-medium depth passes in tight-tolerance applications. Installation and use are handled by CNC machining professionals in aerospace, composites fabrication, and precision manufacturing environments.

This end mill belongs to SECO's DIA430 series, which targets non-ferrous and composite workpiece materials where CVD diamond coating delivers significant tool life advantages over uncoated or PVD-coated alternatives. The 0.25 inch straight shank fits standard collet chucks and tool holders used on vertical and horizontal machining centers. Its centercutting geometry allows plunge entry, adding flexibility in programming. The 2.5 inch overall length keeps overhang manageable for rigidity-sensitive cuts.

Key Features

• CVD diamond coating for superior abrasion resistance in CFRP and composite materials
• Micrograin solid carbide substrate for edge hardness and thermal stability
• 4-flute spiral design with 30-degree helix angle for efficient chip evacuation
• Centercutting geometry allows direct plunge entry without pre-drilling
• Right-hand cut and right-hand flute configuration compatible with standard CNC spindle rotation
• Series DIA430 — purpose-built for non-ferrous and composite material groups

Compatibility

Designed for use in CFRP and composite material machining applications as part of the SECO DIA430 series. Compatible with standard 0.25 inch collet chucks and tool holders on CNC milling machines.

Installation Notes

This tool is installed and operated by qualified CNC machinists and tooling specialists. Ensure the spindle is fully stopped and locked out before changing tooling. Seat the shank fully in the collet or tool holder and torque the retention mechanism to the tool holder manufacturer's specification. When machining CFRP, appropriate dust extraction and respiratory controls are required per applicable shop safety standards.