Kennametal 4071930 Corner Radius End Mill 0.5in 4 Flute Altin

Product Description

The KENNAMETAL 4071930 is a solid carbide corner radius end mill engineered for demanding material removal in steel, stainless steel, cast iron, and hard materials. It carries a 0.5 inch mill diameter with a 0.03 inch corner radius, a 2.5 inch length of cut, and a 5 inch overall length. The AlTiN PVD coating provides heat resistance and extended tool life at elevated cutting speeds. The single-end, 4-flute design supports both roughing and finishing operations in a single tool, making it a practical choice for shops that want to reduce tool changes. A Weldon flat shank aids positive drive retention in the holder.

This end mill is suited for milling applications in ferrous materials including low-alloy steel, stainless steel, cast iron, and hardened workpieces. The extra-long reach and high-helix geometry make it appropriate for deep-pocket milling and side-wall finishing where a standard-length tool cannot reach. It is designed for use with compatible collet and hydraulic chuck systems. CNC machinists, tool-and-die makers, and production milling operators are the typical end users. The HPHV series is intended for high-performance applications where surface finish and dimensional accuracy in tough materials are priorities.

Key Features

• Solid submicron carbide substrate for rigidity and wear resistance in hard materials
• AlTiN PVD coating for oxidation resistance and extended tool life at high cutting temperatures
• 0.03 inch corner radius reduces stress concentration and improves edge strength at the cutting corner
• Extra-long reach geometry with 2.5 inch length of cut for deep-pocket and extended-reach applications
• Weldon flat shank provides positive anti-pullout retention in Weldon-style and side-lock holders
• Right-hand cutting, right-hand flute spiral, centercutting capable for plunge entry

Compatibility

Designed for use with EM-CV Form AD and EM IN-HSK Form A toolholding systems as specified by the manufacturer. Suitable for machining steel, stainless steel, cast iron, and hard materials per primary workpiece material classifications P, M, K, and H.

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and the control in a safe state. Verify holder bore cleanliness and Weldon flat alignment before tightening the set screw to the holder manufacturer specification. Confirm runout with a dial indicator after seating to minimize premature edge wear. Follow the tool manufacturer feed and speed recommendations for the specific workpiece material and do not exceed the tool rated depth of cut.