Kennametal 6676481 Corner Radius End Mill 3/8in 4 Flute

Product Description

The KENNAMETAL 6676481 is a solid carbide corner radius end mill designed for precision milling in demanding metalworking applications. Built to H1TE series specifications, it features a 3/8 inch diameter with a 0.015 inch corner radius that reduces stress concentrations at part edges and extends tool life. The AlTiN PVD coating provides high heat resistance, making it well-suited for dry and high-speed cutting environments. With 4 right-hand flutes and a 36-degree helix, this end mill delivers both roughing and finishing capability in a single tool. It is installed by machinists and CNC operators working on mills, machining centers, and manual knee mills.

This end mill is designed for cutting steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The centercutting geometry allows for plunge entry, expanding its range of use in slotting, profiling, and pocket milling operations. The Weldon flat shank provides positive drive and reduces pullout risk in high-feed applications. Compatible tool holders include EM-CV Form AD and EM IN-HSK Form A style holders.

Key Features

• 0.015 inch corner radius reduces edge chipping and stress risers on finished workpiece corners
• AlTiN PVD coating delivers elevated heat and oxidation resistance for dry or high-speed cutting
• Submicron solid carbide substrate provides rigidity and wear resistance in hard and abrasive materials
• Centercutting design permits direct plunge entry without a pre-drilled pilot hole
• Weldon flat shank ensures secure, slip-resistant seating in compatible holders
• Single end, right-hand cut, normal pitch - suited for both roughing and finishing passes

Compatibility

Designed for use with EM-CV Form AD and EM IN-HSK Form A tool holders. Primary workpiece materials include steel, stainless steel, cast iron, superalloys, titanium, and hard materials (ISO material codes P, M, K, S, H).

Installation Notes

Installation should be performed by a qualified machinist following machine shop safety protocols. Ensure the spindle is fully stopped and the machine is powered down before loading or removing the tool. Seat the Weldon flat shank fully into the holder and tighten the set screw against the flat to prevent pullout under load. Verify runout with a dial indicator before beginning the cut, as excessive runout will accelerate edge wear and compromise corner radius accuracy.