Harvey Tool 942278 Square End Mill 5/64 in 3 Flute Carbide

Product Description

The HARVEY TOOL 942278 is a solid carbide square end mill designed for precise milling operations in metal, composites, and engineering plastics. With a 5/64 inch (0.0781 inch) cutting diameter and a 15/64 inch (0.234 inch) length of cut, this tool is built for tight-tolerance work in confined areas and shallow pockets. The 42-degree variable helix geometry reduces chatter and harmonics during the cut, improving surface finish and tool life. Three flutes provide a balance between chip evacuation and rigidity at this small diameter. The bright, uncoated finish suits a wide range of base materials without risk of coating adhesion issues.

This end mill is suited for precision machining applications in job shops, tool rooms, and production environments. Its 1/8 inch shank diameter makes it compatible with standard collet chucks and end mill holders commonly found on CNC machining centers and manual knee mills. The center-cutting geometry allows for plunge entry, enabling ramping and helical interpolation strategies. Right-hand cut and right-hand flute direction are standard for conventional CNC mill spindle rotation.

Key Features

• 5/64 inch cutting diameter for fine detail and close-tolerance work
• Variable helix design at 42 degrees reduces vibration and improves surface finish
• Three flutes balance chip clearance and core strength at small diameter
• Center-cutting capable — supports plunge, ramp, and helical entry
• Solid carbide construction delivers rigidity and wear resistance
• Bright uncoated finish suitable for a broad range of workpiece materials

Compatibility

Designed for use in standard 1/8 inch collet chucks and end mill holders on CNC machining centers, vertical mills, and compatible rotary tool setups requiring a 1/8 inch shank.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully in the collet or holder to the recommended engagement depth to minimize runout and avoid pullout under load. Verify tool runout with a dial indicator before committing to finishing passes on critical dimensions.