Kennametal 6676469 Corner Radius End Mill 1 in 4 Flute Altin

Product Description

The KENNAMETAL 6676469 is a solid carbide corner radius end mill designed for demanding material removal in metalworking applications. It carries a 1-inch cutting diameter with a 0.0300-inch corner radius, a 2.25-inch length of cut, and a 5-inch overall length. The four-flute, right-hand spiral geometry with a 36-degree helix promotes efficient chip evacuation and stable cutting action. An AlTiN PVD coating adds thermal resistance and extends tool life when cutting hard and abrasive workpiece materials. The 1-inch straight cylindrical shank provides secure clamping in standard toolholders. This tool is appropriate for both roughing and finishing operations and is handled by machinists and tool-and-die professionals working on CNC machining centers.

This end mill is suited for cutting steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The H1TE series submicron carbide grade and AlTiN coating make it well matched to high-speed, high-temperature cutting environments typical of aerospace, die-mold, and precision part manufacturing. The centercutting design permits plunge entry, adding flexibility in complex machining routines. Compatible toolholding interfaces include HC-HSK Form A, HC-CV Form AD, and ER single angle standard collets.

Key Features

• 1-inch cutting diameter with 0.0300-inch corner radius for edge strength and reduced chipping
• 4-flute right-hand spiral design with 36-degree helix for balanced chip load and surface finish
• AlTiN PVD coating provides thermal barrier for extended tool life in hard and abrasive materials
• Centercutting geometry allows direct plunge entry without a pre-drilled hole
• Submicron carbide grade (H1TE series) for toughness and wear resistance
• Straight cylindrical 1-inch shank compatible with standard collet and shrink-fit toolholding systems

Compatibility

Compatible with HC-HSK Form A, HC-CV Form AD, and ER single angle standard collet toolholding systems. Designed for machining steel, stainless steel, cast iron, superalloys, titanium, and hard materials in CNC milling applications.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and machine power locked out per shop safety procedures. Ensure the shank is clean and seated fully in the collet or toolholder before tightening to the toolholder specification. Verify runout with a dial indicator before first use, as excessive runout accelerates corner wear on end mills of this geometry. Consult the machine tool manufacturer and applicable shop standards for feed, speed, and depth-of-cut parameters when setting up this tool for a new application.