Kennametal 3658816 Corner Radius End Mill 1/4 in 3 Flute

Product Description

The KENNAMETAL 3658816 is a solid carbide corner radius end mill designed for high-performance milling in non-ferrous metal applications. The cutter measures 1/4 inch in diameter with a 0.03 inch corner radius, a 3/8 inch length of cut, and a 2 inch overall length. Three right-hand spiral flutes with a high helix angle and coarse pitch promote efficient chip evacuation and smooth cutting action. The bright uncoated finish suits applications where coating interaction with the workpiece material is a concern. This tool is a single-end, center-cutting design built from submicron solid carbide for rigidity and edge retention at elevated cutting speeds.

This end mill is suited for finish and roughing operations in non-ferrous metals such as aluminum, copper, and brass. The AADE series short-length geometry is well matched to CNC machining centers where a compact tool overhang reduces deflection. The 1/4 inch straight cylindrical shank fits standard collet chucks and hydraulic toolholders. Compatible hydraulic sleeve toolholders include the HC 20M through HC 32M Hydraulic Sleeves Metric with Inch Bores and the HC-CV Form AD.

Key Features

• 0.03 inch corner radius reduces stress concentration at the tool-workpiece interface and extends edge life
• Three right-hand spiral flutes with high helix angle for efficient chip removal in non-ferrous materials
• Submicron solid carbide grade provides consistent hardness and wear resistance
• Center-cutting capability allows plunge entry without a pre-drilled pilot hole
• Bright uncoated finish optimized for non-ferrous metal cutting where reactive coatings are unnecessary
• Short overall length of 2 inches minimizes tool deflection in tight-clearance setups

Compatibility

Compatible with HC 20M through HC 32M Hydraulic Sleeves Metric with Inch Bores and the HC-CV Form AD toolholding systems. Designed for use with standard 1/4 inch collet chucks and hydraulic toolholders on CNC milling machines. Primary workpiece material is non-ferrous metal (Material Application Code: N).

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before installing or removing the tool. Ensure the shank is fully seated and clamped to the specified collet torque per the toolholder manufacturer guidelines. Verify runout with a dial indicator before initiating the first cut to protect both the tool and the workpiece.