Harvey Tool 76430-C3 Square End Mill 0.03 in 4 Flute Carbide

Product Description

The HARVEY TOOL 76430-C3 is a solid carbide square end mill designed for precision milling in demanding cutting environments. With a 0.03-inch mill diameter and a 3/32-inch (0.09-inch) length of cut, this tool is built for fine-feature machining in hardened metals, stainless alloys, and other difficult-to-machine materials. The AlTiN coating provides thermal resistance and extended tool life at elevated cutting temperatures. Four right-hand flutes with a 30-degree helix angle deliver efficient chip evacuation and a clean finish. Licensed machinists, toolmakers, and CNC programmers rely on this end mill for tight-tolerance work in production and prototype environments.

This end mill is suited for small-diameter slot milling, pocket milling, and contouring operations on CNC machining centers and manual mills. The 1/8-inch shank diameter fits standard collets and end mill holders commonly found in vertical machining centers. The 1-1/2-inch overall length and 0.27-inch reach length make it appropriate for shallow-to-moderate depth applications where rigidity and runout control are critical. It is center-cutting, allowing for direct plunge entry without pre-drilling.

Key Features

• 0.03-inch mill diameter for fine-feature and micro-milling applications
• AlTiN coating for high-temperature resistance and extended tool life
• 4 right-hand flutes with 30-degree helix angle for efficient chip evacuation
• Solid carbide construction for rigidity and wear resistance
• Center-cutting capability allows direct plunge entry
• 1/8-inch shank diameter fits standard collets and end mill holders

Compatibility

Designed as a direct-fit replacement-style solid carbide end mill for CNC machining centers and manual mills equipped with 1/8-inch collets or end mill holders.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully powered down and locked out before changing tooling. Confirm collet size matches the 1/8-inch shank diameter and that the tool is seated to the correct gauge length before tightening. Verify runout with a dial indicator before initiating a cut, particularly given the small diameter of this tool.