Harvey Tool 966490-C3 Corner Radius End Mill 0.090in 4 Flute

Product Description

The HARVEY TOOL 966490-C3 is a miniature solid carbide corner radius end mill designed for precision metal removal in tight-tolerance machining applications. It carries a 0.090-inch cutting diameter with a 0.50 mm (0.0200-inch) corner radius, a 4-flute spiral geometry, and an AlTiN PVD coating that extends tool life in ferrous and hard-material cutting environments. The 0.875-inch length of cut and stub-length profile provide rigidity when working in close-quarters setups. This tool is a single-end, centercutting design with right-hand flute direction and right-hand cutting, making it suitable for both roughing and finishing passes in one setup.

This end mill is built for use in CNC machining centers handling steel, stainless steel, cast iron, non-ferrous metals, and composite materials. Its miniature form factor fits applications where standard-diameter end mills cannot reach, including slots, pockets, and contoured surfaces on small precision components. A straight-cylindrical 0.125-inch shank seats into standard 1/8-inch toolholders. The normal pitch, fixed helix geometry, and no-chipbreaker design are well suited for finishing and light roughing passes on P, M, K, N, and O workpiece material classifications.

Key Features

• 0.090-inch cutting diameter with 0.0200-inch corner radius (0.50 mm) for controlled edge blending
• AlTiN PVD coating resists heat and wear in steel and stainless steel applications
• 4-flute solid carbide construction supports both roughing and finishing in a single tool
• Centercutting design allows plunge entry without a pilot hole
• Stub-length profile (0.875-inch LOC) maximizes rigidity in miniature setups
• Right-hand cutting, right-hand spiral with normal pitch for predictable chip evacuation

Compatibility

Designed for use with standard 1/8-inch straight-cylindrical toolholders in CNC milling applications. Compatible with steel, stainless steel, cast iron, non-ferrous metal, and composite workpiece materials per ISO material codes P, M, K, N, and O.

Installation Notes

Installation is performed by machining professionals in CNC mill setups. Confirm toolholder runout is within acceptable tolerance before seating this miniature shank, as small-diameter carbide end mills are sensitive to excessive runout. Secure the shank fully within the holder collet to the manufacturer-specified engagement depth. Inspect the cutting edges under magnification before use and do not attempt to resharpen AlTiN-coated tools without proper grinding equipment.