Iscar 3399003 Square End Mill 3/8 in 3 Flute Carbide Dlc

Product Description

The ISCAR 3399003 is a solid carbide square end mill designed for precision milling in demanding metalworking and machining applications. Built from submicron-grade carbide, it features a 3/8-inch cutting diameter, a 1/2-inch length of cut, and a 45-degree helix angle that promotes smooth chip evacuation and reduced cutting forces. The DLC (Diamond-Like Carbon) coating adds surface hardness and lubricity, extending tool life in abrasive and high-speed cutting conditions. With a variable index geometry and right-hand cutting and flute direction, this end mill delivers stable, chatter-resistant performance. It is a single-end, centercutting tool suited for slotting, profiling, and plunging operations.

This end mill is intended for use in CNC machining centers and manual mills across job shop, production, and toolroom environments. It is well suited for milling ferrous and non-ferrous materials where tight tolerances and surface finish quality are priorities. The 3/8-inch shank diameter and 2-inch overall length make it compatible with standard collet and end mill holder tooling setups commonly found in horizontal and vertical milling machines. Machinists and CNC operators in metalworking shops are the primary installers and users of this tool.

Key Features

• Submicron-grade solid carbide construction for rigidity and wear resistance
• DLC coating for improved hardness, lubricity, and extended tool life
• 45-degree helix angle promotes efficient chip evacuation and smooth cuts
• Variable index flute geometry reduces vibration and chatter during cutting
• Centercutting design allows direct plunge entry into the workpiece
• Right-hand cut and right-hand flute direction for standard CNC spindle compatibility

Compatibility

Designed as an OEM-style solid carbide square end mill compatible with standard 3/8-inch collets, end mill holders, and shrink-fit tooling systems used in CNC and manual milling setups.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the spindle fully stopped and the machine in a locked-out state before tool changes. Ensure the shank is fully seated and properly torqued in the holder according to the toolholder manufacturer specifications. Inspect the cutting edges for chips or damage before use. Follow shop-established feeds, speeds, and depth-of-cut parameters appropriate for the workpiece material and machine capability.