Harvey Tool 823040-C3 Square End Mill 0.04 in 3 Flute

Product Description

The HARVEY TOOL 823040-C3 is a solid carbide square end mill designed for high-precision milling in ferrous and non-ferrous materials. With a 0.04-inch cutting diameter and a 0.06-inch length of cut, this tool is built for fine detail work and tight-tolerance applications. The AlTiN coating provides elevated heat resistance and extended tool life under demanding cutting conditions. Three flutes with a 30-degree right-hand helix deliver efficient chip evacuation and a smooth finish. Licensed machinists and toolroom operators use this end mill for micro-milling passes where accuracy and edge integrity are critical.

This end mill fits small-part machining and micro-milling applications where a miniature cutting diameter is required. The 0.125-inch shank diameter allows it to seat in standard collets used across CNC machining centers and manual mills. At 1.5 inches overall length, it provides enough reach for typical cavity work without sacrificing rigidity. It is suited for production environments as well as prototype shops working in alloy steel, stainless, hardened materials, and similar substrates where AlTiN coating delivers performance advantages.

Key Features

• 0.04-inch cutting diameter for micro-milling and fine detail passes
• AlTiN coating for heat resistance and extended tool life in hard materials
• 3-flute geometry with 30-degree right-hand helix for efficient chip evacuation
• Solid carbide construction for rigidity and dimensional stability
• Centercutting capable, allowing plunge entry into workpiece
• 0.125-inch shank diameter fits standard collet systems

Compatibility

Designed as a direct-fit replacement-style end mill for CNC machining centers and manual mills accepting a 0.125-inch collet or end mill holder. Verify runout tolerance and collet condition before use to protect the cutting edge at this diameter.

Installation Notes

Installation of this end mill should be performed by a qualified machinist or toolroom technician. Power down and lock out the spindle before seating or removing the tool from its holder. Use a properly sized collet and torque the drawbar or retention nut to the machine manufacturer's specification. At 0.04 inches diameter, even minor runout or side-loading can cause tool breakage, so inspect the collet and holder for wear before use.