Iscar 3398983 Square End Mill 1/4 in 3 Flute Carbide Dlc

Product Description

The ISCAR 3398983 is a single-end square end mill designed for precision milling in metalworking and machining applications. Built from submicron solid carbide and finished with a DLC (Diamond-Like Carbon) coating, it delivers extended tool life and reduced friction in demanding cutting environments. The 3-flute geometry with a 45-degree helix angle promotes efficient chip evacuation and smooth surface finishes. At 0.25 inches in diameter with a 1-inch length of cut and 3-inch overall length, this end mill suits tight-tolerance work in both manual and CNC setups. Variable index flute spacing helps reduce chatter during aggressive cuts.

This end mill is suited for milling operations on ferrous and non-ferrous materials where a sharp, durable carbide tool with a high-performance coating is required. Typical applications include slotting, profiling, and peripheral milling in job shop, production, and tool-and-die environments. The right-hand cutting and right-hand flute direction make it compatible with standard spindle configurations on vertical machining centers and manual knee mills. Single-end design allows straightforward tool holding in standard collet or end mill holders.

Key Features

• Submicron solid carbide construction for high hardness and wear resistance
• DLC coating reduces friction and extends tool life in dry or semi-dry cutting
• 3-flute, 45-degree helix design promotes chip clearance and surface finish quality
• Variable index flute spacing reduces harmonic chatter during cutting
• Center-cutting capability allows plunge entry into workpieces
• Right-hand cut and right-hand flute for standard spindle compatibility

Compatibility

Designed as a direct-fit replacement or standard tooling selection for any machine tool accepting a 1/4-inch shank end mill via collet chuck, end mill holder, or shrink-fit toolholder.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the spindle is fully stopped and the machine is in a safe lockout state before changing tooling. Seat the shank fully and evenly in the holder to the recommended gauge-line depth per the holder manufacturer. Inspect the cutting edges for chips or damage before each use and replace if the DLC coating shows excessive wear or edge breakdown.