Kennametal 6676529 Corner Radius End Mill 3/4 in 4 Flute Altin

Product Description

The KENNAMETAL 6676529 is a solid carbide corner radius end mill designed for demanding metal removal in production machining environments. Built on the H1TE series platform, it features a 3/4 inch cutting diameter, a 0.03 inch corner radius, and an AlTiN (aluminum titanium nitride) PVD coating that extends tool life in high-heat applications. The four-flute, right-hand spiral geometry supports both roughing and finishing passes in a single tool, reducing the need for multiple setups. Machinists and tool-room professionals working in CNC milling operations are the primary users of this end mill.

This end mill is suited for milling steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The centercutting design allows plunge entry, making it versatile for slotting, profiling, and pocketing operations. The Weldon flat shank provides a positive grip in standard end mill holders, reducing pullout risk during heavy cuts. With a 2-1/4 inch length of cut and a 5 inch overall length, it handles medium-depth features without the need for extended-reach tooling.

Key Features

• Solid carbide submicron-grade construction for rigidity and wear resistance in hard and abrasive materials
• AlTiN PVD coating improves heat resistance and extends tool life in dry or minimal-coolant cutting
• 0.03 inch corner radius reduces stress concentration at the cutting edge and improves surface finish at floor-to-wall transitions
• Four-flute, right-hand spiral geometry rated for both roughing and finishing material removal
• Centercutting capability allows direct plunge entry without a pre-drilled pilot hole
• Weldon flat shank provides positive retention in standard milling chucks and holders

Compatibility

Compatible with EM-CV Form AD and EM IN-HSK Form A toolholding systems as specified by the manufacturer. The 3/4 inch Weldon flat shank fits standard end mill holders designed for that shank diameter.

Installation Notes

Installation is performed by qualified machinists following shop-standard tool-change procedures. Ensure the machine spindle is fully stopped and the control is in an e-stop or tool-change state before inserting or removing the end mill. Secure the Weldon flat against the set screw in the holder to prevent rotation under load. Verify runout with a dial indicator after clamping and before initiating a cut.