Kennametal 6676426 Corner Radius End Mill 1/2 in 4 Flute Altin

Product Description

The KENNAMETAL 6676426 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining environments. Built on the H1TE series platform, it features a 0.5000 inch mill diameter, a 1.6250 inch length of cut, and a 0.0900 inch corner radius that reduces stress concentrations at the cutting edge. The AlTiN (aluminum titanium nitride) PVD coating provides thermal resistance and extended tool life when cutting abrasive and hard workpiece materials. This end mill is suited for machinists and tool-and-die professionals running CNC machining centers in production or job-shop settings.

The 6676426 is engineered for use on steel, stainless steel, cast iron, superalloys, titanium, and hard materials. Its centercutting geometry allows plunge entry, making it versatile for slotting, profiling, and pocket milling operations. The straight cylindrical shank at 0.5000 inch diameter fits standard end mill toolholders. With a 36-degree helix angle and right-hand flute direction, it promotes efficient chip evacuation and smooth surface finishes in both roughing and finishing passes.

Key Features

• Solid carbide submicron-grade construction for rigidity and wear resistance in hard and abrasive materials
• AlTiN PVD coating rated for high heat applications including dry and semi-dry machining
• 0.0900 inch corner radius reduces edge chipping and stress cracking at corners
• Centercutting design enables plunge milling and ramp entry without a pre-drilled hole
• 36-degree helix angle with right-hand spiral flutes promotes chip evacuation and reduces cutting forces
• Single-end configuration rated for both roughing and finishing material removal

Compatibility

Designed for use with standard end mill toolholders accepting a 0.5000 inch straight cylindrical shank. Suitable for CNC vertical and horizontal machining centers cutting steel, stainless steel, cast iron, superalloys, titanium, and hard materials per material codes P, M, K, S, and H.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Seat the shank fully into the toolholder and verify runout before beginning a cut. Follow the toolholder manufacturer torque specifications when securing collet nuts or set screws; do not over-tighten. Coolant-through is not supported on this tool.