Harvey Tool 897978-C3 Square End Mill 5/64 in 3 Flute Carbide

Product Description

The HARVEY TOOL 897978-C3 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. It features a 5/64 inch (0.0780 inch) cutting diameter and a 0.55 inch length of cut, making it well suited for tight-tolerance slot milling, profiling, and contouring in confined spaces. The three-flute geometry balances chip evacuation with surface finish quality. An AlTiN coating provides thermal resistance and extends tool life when cutting hardened steels and high-temperature alloys. This end mill is installed and operated by machinists and CNC programmers in job shop and production environments.

This end mill is designed for use in vertical machining centers, CNC mills, and manual milling machines where small-diameter, high-precision cutting is required. The 1/8 inch shank diameter fits standard collets and toolholders commonly found in light-duty spindles. A 30-degree helix angle promotes smooth cutting action and reduces chatter. Right-hand cut and right-hand flute direction are standard for conventional CNC programming. The single-end configuration is appropriate for applications where tool replacement rather than re-grinding is the standard practice.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding materials
• AlTiN coating for elevated thermal resistance and extended tool life in hardened steels
• 3-flute design balances chip clearance with improved finish quality
• 30-degree helix angle reduces cutting forces and minimizes chatter
• Centercutting capable, allowing plunge entry into workpiece material
• Right-hand cut and right-hand flute for standard CNC compatibility

Compatibility

Designed as an OEM-style solid carbide square end mill for use in standard 1/8 inch collets and toolholding systems on CNC and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully into the collet or toolholder to the recommended grip depth and torque the retention mechanism per the toolholder manufacturer specifications. Inspect the cutting edges for chips or damage before use and confirm runout is within acceptable limits for the application.