Iscar 3398532 Square End Mill 3/4 in 5 Flute Solid Carbide

Product Description

The ISCAR 3398532 is a single-end square end mill designed for precision milling operations in ferrous and non-ferrous materials. Built from submicron-grade solid carbide and coated with TiAlCN for heat and wear resistance, this tool handles high-speed and high-feed applications where surface finish and tool life both matter. It runs a 3/4-inch cutting diameter with a 1-5/8-inch length of cut, a 38-degree right-hand spiral helix, and a variable index flute geometry that reduces chatter during aggressive passes. Machinists and tool-and-die professionals are the primary users.

This end mill suits vertical and horizontal machining centers running 3/4-inch-diameter toolholders. The 5-flute configuration supports higher feed rates compared to standard 4-flute designs, making it well suited for finishing and semi-finishing passes on steel, stainless, and hardened alloys. The right-hand cut and right-hand flute direction are standard for conventional CNC milling setups. The 4-inch overall length fits most standard-depth applications without requiring extended-reach holders.

Key Features

• Submicron-grade solid carbide construction for rigidity and edge retention
• TiAlCN coating improves heat resistance and extends tool life in ferrous materials
• 5-flute design supports higher feed rates compared to 4-flute alternatives
• Variable index flute spacing reduces harmonic chatter during cutting
• 38-degree helix angle optimizes chip evacuation and cutting forces
• Center-cutting capable, allowing plunge entry into workpieces

Compatibility

Designed as a direct-fit replacement for standard 3/4-inch shank end mill toolholders used in CNC machining centers and manual knee mills.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the spindle fully stopped and the machine in a locked-out state per applicable shop safety procedures. Use a calibrated torque wrench and the appropriate collet or set-screw holder for 3/4-inch shank tooling. Inspect the shank and collet bore for debris or wear before seating the tool. Verify runout with a dial indicator after installation before initiating a cutting pass.