Harvey Tool 33631-C4 Square End Mill 0.031 in 3 Flute Carbide

Product Description

The HARVEY TOOL 33631-C4 is a solid carbide square end mill designed for precision milling operations in demanding machining environments. With a 0.0310-inch cutting diameter and a 0.25-inch length of cut, this tool is built for tight-tolerance work in small-feature applications. The three-flute, right-hand spiral design runs at a 30-degree helix angle, promoting efficient chip evacuation and smooth cutting action. An amorphous diamond coating provides enhanced hardness and lubricity at the cutting edge. The 0.125-inch shank diameter and 2.5-inch overall length make it compatible with standard small-bore tool holders used in CNC machining centers.

This end mill is suited for use on CNC vertical machining centers and high-speed spindle setups in job shop, mold and die, and precision component manufacturing environments. The small diameter and long reach configuration make it well suited for detail work, slot milling, and contour passes in hardened materials, composites, and non-ferrous alloys. Machinists and CNC programmers working on intricate part geometries in production or prototype settings will find this tool appropriate for finish and semi-finish passes where tight dimensional control is required.

Key Features

• 0.0310-inch cutting diameter for fine-feature and small-slot milling
• Amorphous diamond coating for improved wear resistance and reduced friction
• 3-flute, right-hand spiral design with 30-degree helix angle for effective chip removal
• Centercutting geometry allows plunge entry into workpiece
• Solid carbide construction provides rigidity and thermal resistance
• Long-length configuration with 0.25-inch LOC supports deeper feature access

Compatibility

Designed as a direct-fit replacement-style solid carbide square end mill for standard 0.125-inch shank tool holders used in CNC machining applications.

Installation Notes

Installation and tool changes should be performed by qualified machinists or CNC operators with the spindle fully stopped and machine in a safe, de-energized state. Use a properly sized collet or end mill holder matched to the 0.125-inch shank diameter to ensure concentricity and minimize runout. At small diameters, even minor runout can accelerate tool wear or cause breakage, so holder condition and collet cleanliness are critical. Follow the tool manufacturer and machine builder guidelines for speeds, feeds, and depth of cut when programming this tool.