Iscar 3398527 Square End Mill 3/8 in 5 Flute Carbide

Product Description

The ISCAR 3398527 is a single-end square end mill designed for precision milling operations in ferrous and hardened materials. It features a 3/8 inch diameter, a 1/2 inch length of cut, and a 5-flute solid carbide construction with a TiAlCN coating. The 38-degree helix angle and variable index flute spacing work together to reduce chatter and improve surface finish. At 2 inches overall length with a 3/8 inch shank diameter, this tool fits standard collet and end mill holders used in CNC machining centers and manual mills. It is centercutting and runs right-hand cutting and flute directions.

This end mill is suited for high-speed finishing and semi-finishing passes in steel, stainless, cast iron, and similar materials. The submicron carbide grade provides edge retention under demanding cutting conditions. It is a single-end tool, making it appropriate for operations where tool life and edge integrity are critical. Machinists and CNC operators in job shops, production facilities, and tool rooms are the primary users of this type of cutter.

Key Features

• 5-flute design increases feed rates and improves surface finish compared to standard 4-flute tools
• TiAlCN coating improves heat resistance and extends tool life in ferrous materials
• 38-degree helix angle reduces cutting forces and chatter
• Variable index flute spacing further dampens vibration during high-speed cuts
• Centercutting capable, allowing plunge entry
• Submicron solid carbide grade for consistent edge sharpness and toughness

Compatibility

Designed for use in standard 3/8 inch collets, ER collet chucks, and end mill holders on CNC machining centers and manual knee mills. Confirm holder runout and spindle taper compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and locked out before mounting or removing the tool. Seat the shank to the full recommended engagement depth in the holder and torque the retention mechanism per the holder manufacturer specifications. Inspect the cutting edges and coating condition before each use and replace the tool if chipping or coating loss is observed.