Iscar 3399019 Square End Mill 5/16 in 3 Flute Carbide Dlc

Product Description

The ISCAR 3399019 is a solid carbide square end mill designed for precision milling operations in metalworking and machining environments. It features a 5/16-inch cutting diameter, a 1/2-inch length of cut, and a 45-degree helix angle with a variable index configuration. The DLC (Diamond-Like Carbon) coating reduces friction and improves wear resistance during high-speed cutting. The submicron carbide grade provides the hardness and edge retention required for demanding ferrous and non-ferrous applications. This is a single-end tool with three flutes and a right-hand cutting and flute direction, suited for finish and semi-finish milling passes.

This end mill is used in CNC machining centers and manual mills across production shops, tool rooms, and maintenance machining environments. Its compact 5/16-inch diameter makes it well suited for slot milling, peripheral milling, and profiling in tight geometries. The centercutting design allows plunge entry. The 2-inch overall length and matched 5/16-inch shank diameter make it compatible with standard ER and milling collet systems. Machinists and CNC operators working in job shops or production environments are the primary installers of this tooling.

Key Features

• 5/16-inch cutting diameter with 1/2-inch length of cut for controlled depth engagement
• DLC coating for reduced friction and extended tool life in abrasive materials
• 45-degree helix angle with variable index for improved chip evacuation and reduced chatter
• Three-flute, right-hand spiral geometry optimized for balance between chip clearance and surface finish
• Centercutting capability allows direct plunge entry without pre-drilling
• Submicron carbide grade delivers superior hardness and edge retention

Compatibility

Designed as an OEM-style solid carbide end mill fitting standard 5/16-inch collet chucks and milling tool holders used in CNC machining centers and manual milling machines.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully and evenly in a clean, undamaged collet or tool holder and torque the retention nut according to the tool holder manufacturer specifications. Inspect the cutting edges for chips or wear before each use.