Harvey Tool 24678-C3 Ball End Mill 5/64 in 4 Flute Carbide

Product Description

The HARVEY TOOL 24678-C3 is a miniature solid carbide ball end mill designed for precise milling in steel, stainless steel, and cast iron. With a 5/64 inch (0.0780 inch decimal) cutting diameter and a 0.1170 inch reach length, this stub-length tool is built for tight-tolerance work in confined spaces and shallow cavities. The four-flute, right-hand spiral geometry paired with a 30-degree helix angle promotes efficient chip evacuation and smooth surface finishes. An AlTiN (aluminum titanium nitride) PVD coating extends tool life in ferrous materials by improving heat resistance and surface hardness. Licensed machinists and CNC tooling technicians are the primary users of this end mill in production and prototype environments.

This ball end mill is suited for light roughing and finishing passes in ferrous workpiece materials including steel, stainless steel, and cast iron. Its stub length classification and straight cylindrical shank make it well-suited for use in high-speed CNC machining centers, vertical mills, and precision milling fixtures where minimal overhang is critical to maintaining dimensional accuracy. The 1/8 inch shank diameter is compatible with standard collets and end mill holders used in small-format CNC setups.

Key Features

• 5/64 inch (0.0780 inch) ball nose diameter with 0.0390 inch nose radius for accurate 3D contour milling
• AlTiN PVD coating improves wear resistance and heat tolerance in ferrous materials
• Four right-hand spiral flutes with 30-degree helix angle for balanced chip flow
• Stub length design minimizes deflection during tight-tolerance cuts
• Single-end configuration with straight cylindrical 1/8 inch shank
• Rated for both roughing and finishing material removal operations

Compatibility

Designed for use in steel, stainless steel, and cast iron workpiece applications. Compatible with standard 1/8 inch collets and end mill holders. Part of the HARVEY TOOL Miniature End Mills - Ball - Stub and Standard series.

Installation Notes

Installation and tool changes should be performed by qualified CNC machinists or tooling technicians with the machine in a fully stopped and locked-out state. Verify collet and holder runout before use, as excessive runout accelerates wear on miniature tooling. Consult the machine manufacturer and tooling documentation for appropriate speeds, feeds, and depth-of-cut parameters before beginning a new operation. Handle carbide tooling carefully to avoid chipping the cutting edges.