Harvey Tool 870930 Corner Radius End Mill 1/8 in 3 Flute

Product Description

The HARVEY TOOL 870930 is a miniature corner radius end mill designed for precision milling in tight tolerances across a wide range of materials. Built from solid carbide, it features a 0.0300-inch corner radius and a 3-flute, right-hand spiral geometry that supports both roughing and finishing operations in a single tool. At 1/8 inch in diameter with a 1/2-inch length of cut, this end mill is sized for fine detail work and small-feature machining where standard tooling cannot reach. Machinists and CNC operators working in job shops, toolrooms, and production environments will find this tool suited for high-precision applications requiring consistent edge quality.

This end mill is built for use in steel, stainless steel, cast iron, aluminum, non-ferrous metals, composites, and wood. Its centercutting design allows plunge entry, expanding its utility in slotting, profiling, and pocket milling operations. The stub and standard miniature series sizing makes it a practical choice for small-part machining on VMCs, CNC mills, and Swiss-style machine centers where clearance and rigidity are critical considerations. It mounts in standard straight-bore toolholders accepting a 1/8-inch shank.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and non-ferrous materials
• 0.0300-inch corner radius with a tight tolerance of plus or minus 0.0010 inch for repeatable edge geometry
• 3-flute, right-hand spiral design at 30-degree helix angle supports chip evacuation during both roughing and finishing passes
• Centercutting capability allows direct plunge entry without pre-drilled pilot holes
• Bright uncoated finish suitable for aluminum and other non-ferrous materials where coating adhesion can cause built-up edge
• Straight-cylindrical 1/8-inch shank fits standard collet chucks and toolholders

Compatibility

Designed for use with standard straight-bore toolholders accepting a 1/8-inch shank diameter. Part of the Harvey Tool Miniature End Mills - Corner Radius - Stub and Standard series.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe state before loading or unloading the tool. Seat the shank fully in the collet or toolholder and torque the retention hardware to the toolholder manufacturer specifications. Verify runout with a dial indicator after installation to protect the cutting edge and maintain dimensional accuracy.