Harvey Tool 76440-C3 Square End Mill 0.04 in 4 Flute Carbide

Product Description

The HARVEY TOOL 76440-C3 is a solid carbide square end mill designed for precision milling in demanding materials. With a 0.04 inch cutting diameter and a 0.12 inch length of cut, this tool is built for tight-tolerance work in confined features and small-part machining. The 4-flute, right-hand cutting geometry with a 30-degree helix angle promotes efficient chip evacuation and smooth surface finishes. An AlTiN coating adds thermal and wear resistance, extending tool life in ferrous and hardened materials. Centercutting capability allows plunge entry without a pre-drilled start hole. This end mill is typically installed and run by machinists and CNC tooling specialists.

This end mill is suited for small-feature milling operations in machining centers and CNC mills handling ferrous alloys, stainless steels, hardened steels, and similar difficult-to-machine materials. The 0.125 inch shank diameter fits standard collets and tool holders common in precision machining setups. With a reach length of 0.36 inches and a 1.5 inch overall length, the 76440-C3 is appropriate for shallow-to-moderate depth pocket milling, slotting, and profiling where a micro-diameter tool is required.

Key Features

• 0.04 inch cutting diameter for micro and small-feature milling
• 4-flute right-hand geometry with 30-degree helix angle for efficient chip flow
• AlTiN coating for elevated heat and wear resistance in ferrous materials
• Centercutting design allows direct plunge entry
• Solid carbide construction for rigidity and dimensional stability at high speeds
• 0.125 inch shank diameter fits standard precision collet systems

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide square end mill for CNC machining centers and manual mills accepting a 0.125 inch shank diameter collet or tool holder.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before seating the shank. Verify runout after installation using a dial indicator before cutting. Do not exceed the recommended depth of cut for micro-diameter carbide tooling, as thin cross-sections are susceptible to breakage under excessive radial or axial load.