Kennametal 6676495 Corner Radius End Mill 1/2 in 4 Flute Altin

Product Description

The KENNAMETAL 6676495 is a solid carbide corner radius end mill engineered for demanding metal removal in production machining environments. Measuring 0.5 inches in diameter with a 0.03 inch corner radius, this single-end tool runs a 4-flute, right-hand spiral geometry with a 36-degree helix angle. The length of cut is 0.63 inches and the overall length is 2.5 inches. An AlTiN (aluminum titanium nitride) PVD coating provides high heat resistance and wear life at elevated cutting speeds. The H1TE series designation reflects a short-length, Weldon flat shank design suited to rigid toolholding setups. This end mill handles both roughing and finishing passes and is centercutting, allowing plunge entry where the operation requires it.

The 6676495 is designed for machining steel, stainless steel, cast iron, superalloys, titanium, and hard materials. It is well suited to mold and die work, aerospace component machining, and general production turning where corner radius geometry is needed to reduce stress concentration and improve surface finish at part shoulders. The Weldon flat shank is compatible with EM-CV Form AD and EM IN-HSK Form A toolholders as noted by the manufacturer. Normal pitch and fixed helix geometry make this tool predictable and repeatable across a range of CNC milling applications.

Key Features

• 0.03 inch corner radius reduces stress risers at part shoulders and improves surface finish
• AlTiN PVD coating provides oxidation resistance and extended tool life in ferrous and hard materials
• 4-flute, right-hand spiral geometry with 36-degree helix supports both roughing and finishing
• Centercutting design allows direct plunge milling entry
• Weldon flat shank provides positive anti-pullout engagement in standard milling chucks
• Submicron carbide grade maintains edge integrity in superalloys and titanium

Compatibility

Compatible with EM-CV Form AD and EM IN-HSK Form A toolholding systems per manufacturer data. The 0.5 inch Weldon flat shank fits standard 1/2 inch end mill holders equipped for flat-drive retention. Intended for use on CNC vertical and horizontal machining centers running 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 or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the Weldon flat against the set screw in the holder to prevent axial pullout; torque the set screw per the toolholder manufacturer specifications. Confirm runout with a dial indicator before production cuts, particularly when machining superalloys or hard materials where edge deflection accelerates wear.