Harvey Tool 980240 Corner Radius End Mill 1/8 in 4 Flute

Product Description

The HARVEY TOOL 980240 is a miniature solid carbide corner radius end mill designed for precision milling in tight-tolerance applications. It features a 1/8 inch mill diameter, a 3/16 inch length of cut, and a 0.0400 inch corner radius with a tolerance of plus or minus 0.0010 inches. The 4-flute, single-end geometry supports both roughing and finishing operations in a single tool. The bright uncoated finish and 30-degree right-hand spiral helix promote efficient chip evacuation. This tool is suited for machinists and tool-and-die professionals running CNC mills or manual vertical mills requiring a stub-reach miniature end mill.

This end mill is engineered for use across a broad range of workpiece materials including steel, stainless steel, cast iron, aluminum, non-ferrous metals, wood, and composite materials. Its centercutting design allows plunge entry, making it well suited for slot milling, profiling, and contouring where a radiused corner edge is required to reduce stress concentrations at internal part features. The short 1-1/2 inch overall length and 1/8 inch straight-cylindrical shank are sized to fit standard toolholders used in small-part machining and micro-milling setups.

Key Features

• 0.0400 inch corner radius with tight tolerance of plus or minus 0.0010 inches for consistent edge geometry
• Solid carbide construction for rigidity and wear resistance in ferrous and non-ferrous materials
• 4-flute spiral configuration supports both roughing and finishing in a single pass
• Centercutting design enables direct plunge entry without a pre-drilled pilot hole
• Bright uncoated finish maintains sharp edge geometry suitable for aluminum and non-ferrous applications
• Right-hand cut and right-hand flute direction compatible with standard CNC and manual milling setups

Compatibility

Designed for use with standard straight-bore toolholders accepting a 1/8 inch shank diameter. Suitable for CNC machining centers and manual vertical mills used in precision small-part and micro-milling applications.

Installation Notes

Installation should be performed by a qualified machinist following shop-floor tooling procedures. Ensure the spindle is fully powered down and the toolholder is clean and free of debris before inserting the shank. Seat the shank to the recommended engagement depth per the toolholder specification and torque the retention mechanism according to the toolholder manufacturer guidelines. Verify runout with a dial indicator before initiating a cut to protect both the tool and the workpiece.