Harvey Tool 73045-C3 Square End Mill 0.045 in 4 Flute Altin

Product Description

The HARVEY TOOL 73045-C3 is a solid carbide square end mill designed for precision milling in demanding machining environments. With a 0.045-inch cutting diameter, a 0.135-inch length of cut, and a 1/8-inch shank diameter, this tool is built for tight-tolerance work in confined spaces and micro-milling applications. The four-flute geometry paired with a 30-degree helix angle delivers efficient chip evacuation and a stable cut. An AlTiN coating improves heat resistance and extends tool life in ferrous and hardened materials. Licensed machinists and CNC tooling professionals are the primary users of this end mill.

This end mill is suited for precision slot milling, profiling, and contouring operations on ferrous metals, hardened steels, stainless alloys, and similar materials where thermal load and surface finish are critical concerns. Its centercutting design allows plunge entry without pre-drilling, adding flexibility in CNC machining center setups. The 1-1/2-inch overall length and 1/8-inch shank make it compatible with standard collets and tool holders used on vertical machining centers and CNC routers requiring micro end mills.

Key Features

• 0.045-inch cutting diameter for micro and tight-tolerance milling operations
• AlTiN coating provides elevated heat resistance and extended tool life in ferrous materials
• 4-flute design with 30-degree helix angle for improved chip flow and surface finish
• Centercutting geometry allows direct plunge entry without a pilot hole
• Right-hand cut and right-hand flute configuration for standard CNC spindle use
• Solid carbide construction delivers rigidity and wear resistance over high-speed tool paths

Compatibility

Designed as an OEM-style solid carbide micro end mill for use with standard 1/8-inch collets and tool holders on CNC machining centers, CNC routers, and manual mills equipped for small-diameter tooling.

Installation Notes

Installation of this end mill should be performed by a qualified machinist or CNC tooling professional. Ensure the spindle is fully stopped and locked before changing tooling. Seat the 1/8-inch shank fully and evenly in a matched collet to the specified clamping depth to prevent runout. With a 0.045-inch diameter, this tool is sensitive to side loading and improper feed rates — consult the manufacturer's speed and feed charts before programming tool paths.