Harvey Tool 980240-C3 Corner Radius End Mill 1/8 in 4 Fl

Product Description

The HARVEY TOOL 980240-C3 is a miniature corner radius end mill designed for precision milling in demanding metalworking applications. Built from solid carbide and coated with AlTiN (Aluminum Titanium Nitride) via PVD process, this tool delivers hardness and heat resistance suited for high-speed cutting. It features a 1/8 inch mill diameter, a 0.04 inch corner radius, and 4 right-hand spiral flutes. The stub-length geometry keeps the tool stiff and reduces deflection in tight-tolerance work. It is center-cutting and handles both roughing and finishing passes. Licensed machinists, CNC operators, and precision tooling shops are the primary users of this tool.

This end mill is intended for use in CNC machining centers and manual mills where small-diameter, close-tolerance work is required. The AlTiN coating extends tool life when cutting ferrous metals, stainless steel, and cast iron. The 3/16 inch length of cut and 1/8 inch straight cylindrical shank make it well suited for shallow-pocket milling, contouring, and profile work in steel, stainless steel, cast iron, non-ferrous metals, and composite materials. It fits standard toolholders accepting a 1/8 inch shank.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and non-ferrous materials
• AlTiN PVD coating provides elevated heat and oxidation resistance during dry or high-speed cutting
• 0.04 inch corner radius reduces stress concentration and extends corner life compared to a sharp-edge end mill
• Center-cutting design allows plunge entry into the workpiece
• Right-hand cut, right-hand flute spiral with normal pitch for standard CNC toolholder compatibility
• Stub-length geometry minimizes deflection for improved accuracy in miniature milling applications

Compatibility

Designed for use with standard toolholders accepting a 1/8 inch straight cylindrical shank. Suitable for machining steel, stainless steel, cast iron, non-ferrous metals, and composite materials. Part of the Harvey Tool Miniature End Mills - Corner Radius - Stub and Standard series.

Installation Notes

Installation is performed by a machinist or CNC operator. Ensure the machine spindle is fully stopped and the tool is secured in a clean, properly sized collet or toolholder before tightening. Verify runout with a dial indicator before beginning a cut, as even minor runout at this diameter will affect surface finish and tool life. Follow the tool manufacturer feed and speed recommendations for the specific workpiece material and coating type.