Harvey Tool 76278 Square End Mill 5/64 in 2 Flute Carbide

Product Description

The HARVEY TOOL 76278 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. It features a 5/64-inch (0.0780-inch) mill diameter and a 15/64-inch (0.234-inch) length of cut, making it well suited for fine detail work in tight spaces. The 2-flute, right-hand spiral configuration with a 30-degree helix angle promotes efficient chip evacuation. A 1/2-inch reach length and long-length designation give this tool extended access into workpiece features. The bright, uncoated finish preserves the as-ground carbide edge for general-purpose use across a range of materials. Installation is performed by licensed machinists and CNC programmers.

This end mill is used in vertical machining centers, CNC mills, and manual milling machines where small-diameter, high-precision cutting is required. The long reach and extended neck geometry allow access to deep pockets, slots, and profiling operations that standard-length tools cannot reach. It is centercutting, meaning it can plunge directly into the workpiece. Typical materials include aluminum, brass, plastics, and softer steels. The single-end design means the tool is replaced rather than reversed when the cutting edge is worn.

Key Features

• Solid carbide construction for rigidity and wear resistance in precision milling
• 2-flute right-hand spiral with 30-degree helix for effective chip evacuation
• Centercutting capability allows direct plunge entry into the workpiece
• Extended reach with 1/2-inch reach length and long-length designation for deep-feature access
• Bright, uncoated finish suitable for general-purpose machining across common materials
• Right-hand cutting direction compatible with standard spindle rotation

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC machining centers and manual mills accepting a 1/8-inch straight shank; no specific OEM model compatibility was provided in the product data.

Installation Notes

This tool is installed by qualified machinists or CNC setup technicians. The machine spindle must be fully stopped and locked out before changing tooling. The 1/8-inch shank requires a collet or end mill holder of matching diameter, properly torqued per the machine manufacturer's specifications. Avoid side-loading the tool beyond rated depth-of-cut parameters, as the small diameter makes the tool susceptible to deflection and breakage at excessive feed rates.