Harvey Tool 877693-C3 Corner Radius End Mill 0.093in 4 Flute

Product Description

The HARVEY TOOL 877693-C3 is a miniature solid carbide corner radius end mill built for precision material removal in tight spaces and long-reach applications. It features a 0.093 inch mill diameter with a 0.01 inch corner radius and a 4-flute, right-hand spiral geometry that supports both roughing and finishing operations in a single tool. The AlTiN (aluminum titanium nitride) PVD coating improves heat resistance and tool life when cutting ferrous and difficult-to-machine materials. With a 2 inch overall length and extended-reach design, this end mill is suited for jobs where standard-length tools cannot reach the work surface.

This end mill is designed for use in CNC machining centers and milling applications involving steel, stainless steel, cast iron, non-ferrous metals, and composite materials. The long-reach, standard-flute configuration makes it a strong choice for cavity work, deep-pocket milling, and profiling in mold and die, aerospace, and precision part manufacturing. It mounts in standard straight-bore toolholders accepting a 1/8 inch shank. The center-cutting geometry allows plunge entry where required.

Key Features

• 0.01 inch corner radius protects the cutting edge and improves surface finish at part corners
• AlTiN PVD coating extends tool life in steel, stainless steel, and cast iron applications
• Extended-reach geometry with 0.75 inch reach length accesses deep features standard tools cannot
• 4-flute, right-hand cut, right-hand spiral for efficient chip evacuation and smooth surface finish
• Center-cutting design permits direct plunge entry without a pre-drilled hole
• Solid carbide construction delivers rigidity and dimensional stability at elevated cutting speeds

Compatibility

Compatible with standard straight-bore toolholders and collet chucks accepting a 1/8 inch cylindrical shank. Part of the Harvey Tool Miniature End Mills - Corner Radius - Long Reach, Standard Flute series.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or CNC operator with the spindle fully stopped and the machine in a safe, locked-out state. Ensure the toolholder bore and shank are clean and free of chips or burrs before seating the tool. Confirm runout with a dial indicator before beginning a production cut, as runout is especially critical at small diameters. Follow the machine manufacturer and tool manufacturer guidelines for speeds, feeds, and depth of cut for the workpiece material.