Harvey Tool 986305-C3 Corner Radius End Mill 3mm 4FL Altin

Product Description

The HARVEY TOOL 986305-C3 is a miniature corner radius end mill engineered for precision milling in demanding metalworking applications. Built from solid carbide with an AlTiN (aluminum titanium nitride) PVD coating, this single-end tool features a 3 mm cutting diameter, a 0.5 mm corner radius, and 4 right-hand helical flutes with a 30-degree helix angle. The stub-and-standard series geometry supports both roughing and finishing passes in a compact form factor. At 1.5 inches overall length with a 9 mm length of cut, it delivers rigid performance in tight-clearance setups on CNC machining centers and toolholders.

This end mill is suited for precision contouring, profiling, and pocket milling in steel, stainless steel, cast iron, non-ferrous metals, and composite materials. The 0.5 mm corner radius reduces stress concentration at tool edges and improves surface finish on inside corners. The centercutting design allows plunge entry. The 1/8 inch straight cylindrical shank fits standard toolholders used in vertical and horizontal CNC milling setups common in job shops, aerospace component machining, and mold-and-die work.

Key Features

• 3 mm cutting diameter with 0.5 mm corner radius for precise edge blending and corner profiling
• Solid carbide construction for high rigidity and extended tool life in ferrous and non-ferrous materials
• AlTiN PVD coating provides heat resistance and reduced friction at elevated cutting speeds
• 4 right-hand helical flutes at 30-degree helix for efficient chip evacuation during roughing and finishing
• Centercutting geometry allows direct plunge milling without pre-drilling
• Straight cylindrical 1/8 inch shank compatible with standard CNC toolholders

Compatibility

Designed for use with standard CNC toolholders accepting a 1/8 inch straight cylindrical shank. Suitable for machining steel, stainless steel, cast iron, non-ferrous metals, and composite workpiece materials as classified under material codes P, M, K, N, and O.

Installation Notes

Installation and operation should be performed by qualified machinists or CNC tooling technicians. Ensure the toolholder collet and spindle are clean and within manufacturer runout tolerances before seating the shank. Power down and lock out the machine spindle before changing or inspecting tooling. Do not exceed the tool manufacturer's recommended speeds and feeds for the workpiece material and depth of cut.