Kennametal 6676501 Corner Radius End Mill 1/2 in 4 Flute Altin

Product Description

The KENNAMETAL 6676501 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining environments. Built on the H1TE series platform, this single-end, centercutting tool features a 0.5 inch mill diameter, a 0.12 inch corner radius, and four right-hand spiral flutes with a 36-degree helix angle. The AlTiN PVD coating provides elevated heat resistance and wear protection during aggressive cutting operations. With a short-length flute geometry and Weldon flat shank, it is suited for stable, high-rigidity setups in CNC milling applications. Machinists and tool-and-die professionals working with hard-to-machine alloys rely on this geometry for both roughing and finishing passes in a single tool.

This end mill is engineered for use on steel, stainless steel, cast iron, superalloys, titanium, and hard materials, covering ISO material groups P, M, K, S, and H. The submicron carbide grade supports cutting in high-hardness workpieces where edge toughness and thermal stability are critical. It is compatible with EM-CV Form AD and EM IN-HSK Form A toolholding systems, making it suitable for a range of CNC machining centers running ferrous and exotic alloy components in both production and job-shop environments.

Key Features

• Solid carbide submicron grade construction for edge strength in hard and abrasive materials
• AlTiN PVD coating extends tool life in dry and semi-dry high-temperature cutting conditions
• 0.12 inch corner radius reduces stress concentration and improves surface finish at floor-to-wall transitions
• 36-degree right-hand helix promotes efficient chip evacuation in deep-pocket and slotting operations
• Centercutting design allows plunge entry without a pre-drilled pilot hole
• Weldon flat shank provides secure, anti-pullout retention in set-screw toolholders
• Rated for both roughing and finishing material removal in a single tool pass

Compatibility

Compatible with EM-CV Form AD and EM IN-HSK Form A toolholding systems. Designed for CNC milling applications involving steel, stainless steel, cast iron, superalloys, titanium, and hard materials (ISO P, M, K, S, H). Part of the KENNAMETAL H1TE series.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the Weldon flat shank fully into the toolholder before tightening set screws to manufacturer torque specifications for the holder in use. Verify runout with a dial indicator before beginning a production cut, particularly when machining tight-tolerance features in hard alloys.