Kennametal 6676427 Corner Radius End Mill 0.5in 4 Flute Altin

Product Description

The KENNAMETAL 6676427 is a solid carbide corner radius end mill designed for high-performance milling in demanding metalworking applications. Built on the H1TE series platform, it features a 0.5-inch mill diameter, a 0.12-inch corner radius, and an AlTiN PVD coating that extends tool life in high-heat cutting conditions. The 4-flute, right-hand spiral geometry supports both roughing and finishing operations in a single tool. With a 1.25-inch length of cut and a 3.25-inch overall length, this centercutting end mill is suited for machinists and tooling professionals working on CNC mills and machining centers where tight tolerances and surface finish both matter.

This end mill is engineered for use on steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The AlTiN coating provides oxidation resistance and hardness retention at elevated temperatures, making it effective in dry or minimal-coolant cutting environments. The straight cylindrical shank fits standard end mill toolholders. It is a single-end design with normal pitch fluting and no chipbreaker, appropriate for general-purpose to semi-aggressive material removal on production runs and job shop work.

Key Features

• 0.12-inch corner radius reduces stress concentration and improves corner strength in milled pockets and slots
• AlTiN PVD coating provides thermal resistance and wear protection on steel, stainless steel, and hard materials
• Submicron carbide grade delivers edge toughness and consistent performance across roughing and finishing passes
• Centercutting design allows plunge entry directly into the workpiece
• Right-hand cut, right-hand flute direction with normal pitch for predictable chip evacuation
• No coolant-through requirement simplifies setup in standard toolholder configurations

Compatibility

Compatible with standard end mill toolholders. Designed for use on steel, stainless steel, cast iron, superalloys, titanium, and hard materials corresponding to material codes P, M, K, S, and H. Part of the KENNAMETAL H1TE series.

Installation Notes

Installation is performed by a machinist or tooling technician on a CNC or manual milling machine. Power down and lock out the spindle before inserting or removing the tool from the toolholder. Ensure the straight cylindrical shank is fully seated and the toolholder runout is within acceptable limits before cutting. Verify correct spindle speed and feed rate for the workpiece material before engaging the cut.