Iscar 3398987 Square End Mill 1/4 in 3 Flute Carbide Dlc

Product Description

The ISCAR 3398987 is a solid carbide square end mill designed for precision milling in demanding machining environments. It features a 1/4 inch cutting diameter, a 1/2 inch length of cut, and a 3-inch overall length, making it well-suited for close-tolerance profiling and slotting operations. The tool carries a DLC (Diamond-Like Carbon) coating, which reduces friction and extends tool life in non-ferrous and hard material applications. Three flutes with a 45-degree helix angle and right-hand cutting and flute direction contribute to efficient chip evacuation and surface finish quality. The submicron carbide grade adds wear resistance for high-speed cuts.

This end mill is used in CNC machining centers and manual milling machines for profiling, slotting, and contouring operations. The extended reach design, with a 1-1/4 inch reach length, allows access to deeper features without tool interference. The variable index geometry helps reduce chatter and vibration during cuts, which is especially useful when machining aluminum, composites, and other non-ferrous materials. It is installed and operated by machinists and CNC programmers working in production shops, tool rooms, and job shops.

Key Features

• 1/4 inch cutting diameter with 1/2 inch length of cut for precise slot and profile milling
• DLC coating reduces friction and extends tool life in non-ferrous applications
• 45-degree helix angle promotes efficient chip evacuation and improved surface finish
• Variable index flute geometry reduces chatter and vibration during cutting
• Extended reach design with 1-1/4 inch reach length for access to deeper features
• Submicron solid carbide grade for superior wear resistance and edge retention

Compatibility

Designed as a single-end square end mill with a 1/4 inch shank diameter, compatible with standard 1/4 inch collets and end mill holders on CNC and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before changing tooling. Secure the shank in a properly sized collet or end mill holder and torque to the holder manufacturer's specification. Verify runout with a dial indicator before beginning a production run.