Kennametal 6676504 Corner Radius End Mill 0.5in 4 Flute Altin

Product Description

The KENNAMETAL 6676504 is a solid carbide corner radius end mill designed for high-performance milling in demanding material applications. It features a 0.5-inch diameter, a 1.25-inch length of cut, and a 0.06-inch corner radius that reduces stress concentrations and extends tool life at the cutting edge. With 4 right-hand spiral flutes and an AlTiN (PVD) coating, this end mill handles both roughing and finishing operations. The Weldon flat shank provides positive drive in compatible toolholders. This is a single-end, centercutting tool from the H1TE series, built from submicron carbide grade for edge retention in hard and abrasive workpiece materials.

This end mill is suited for machining steel, stainless steel, cast iron, superalloys, titanium, and hard materials. It is appropriate for use in CNC machining centers and manual knee mills where corner radius geometry is required to blend floor-to-wall transitions or improve fatigue resistance in finished parts. Compatible toolholder forms listed by the manufacturer include EM-CV Form AD and EM IN-HSK Form A. Typical applications include die and mold work, aerospace component machining, and general precision metalworking where extended tool life and consistent surface finish are priorities.

Key Features

• Solid carbide construction from submicron material grade for hardness and wear resistance
• AlTiN PVD coating rated for steel, stainless steel, cast iron, superalloys, titanium, and hard materials
• 0.06-inch corner radius reduces edge chipping and improves surface finish at floor-wall intersections
• Centercutting design allows plunge entry into workpiece material
• Weldon flat shank for secure, positive drive in standard toolholders
• Right-hand cutting and right-hand flute direction for standard CNC spindle compatibility

Compatibility

Compatible toolholder forms specified by the manufacturer include EM-CV Form AD and EM IN-HSK Form A. This tool is designed for use in machining applications involving steel, stainless steel, cast iron, superalloys and titanium, and hard materials (ISO material codes P, M, K, S, H).

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and the toolholder is clean and free of chips or contamination before seating the end mill. Secure the Weldon flat shank using the set screw on the toolholder flat to prevent axial pullout under load. Verify runout with a dial indicator after installation and before initiating a cut cycle.