Harvey Tool 72031-C4 Square End Mill 1/32 in 2 Flute Carbide

Product Description

The HARVEY TOOL 72031-C4 is a miniature square end mill designed for precision milling of small features in tight tolerances. Built from solid carbide and finished with an amorphous diamond coating, it delivers wear resistance and edge retention in demanding materials. The 2-flute configuration provides efficient chip evacuation in confined cuts. With a cutting diameter of 0.031 inches and a 3/32-inch length of cut, this tool is suited for micro-slot milling, profiling, and detail work where larger tooling cannot reach. It is installed and run by machinists and tool-and-die professionals using CNC mills and high-speed machining centers.

This end mill fits applications requiring extremely fine detail in metals, composites, and engineered plastics. The 30-degree helix angle balances cutting forces and chip flow at small diameters. Centercutting geometry allows plunge entry, adding flexibility in programming. The 1/8-inch shank diameter is a common size for small-diameter collet systems on CNC machining centers, making this a practical drop-in for micro-milling operations in toolrooms, moldmaking shops, and precision manufacturing environments.

Key Features

• Solid carbide construction for rigidity and edge retention at small diameters
• Amorphous diamond finish reduces friction and extends tool life in abrasive materials
• 2-flute design promotes chip clearance in narrow slots and deep pockets
• 30-degree helix angle balances axial cutting forces for stable micro-milling
• Centercutting geometry permits direct plunge entry without pre-drilling
• Right-hand cut, right-hand flute — standard configuration for conventional CNC setups

Compatibility

Designed for use in CNC machining centers and high-speed mills equipped with 1/8-inch collet holders or ER-series collet systems. Suited for length-of-cut ranges up to 0.100 inches per pass in precision micro-milling applications.

Installation Notes

Installation should be performed by a qualified machinist familiar with small-diameter tooling. Ensure the collet and collet nut are clean and free of debris before seating the 1/8-inch shank, as runout at this diameter significantly affects tool life and surface finish. Always verify spindle speed and feed rate are appropriate for the 0.031-inch diameter before engaging the cut. Do not exceed the rated length of cut, and inspect the tool under magnification before reuse to detect edge chipping invisible to the naked eye.