Harvey Tool 966316-C4 Square End Mill 0.25in Downcut Carbide

Product Description

The HARVEY TOOL 966316-C4 is a solid carbide square end mill designed for precision milling operations requiring a downcut flute geometry. With a 0.25 inch cutter diameter, 0.375 inch length of cut, and a 2.5 inch overall length, this single-end tool is built for tight-tolerance work in a variety of materials. The 20-degree helix angle combined with the downcut flute direction pushes chips downward, helping to produce clean top-surface finishes and reducing workpiece lifting in laminate, composite, and wood applications. An amorphous diamond coating extends cutting edge life and reduces friction at the tool-workpiece interface. This end mill is installed and operated by machinists and CNC tooling professionals.

This end mill is suited for CNC machining centers and manual milling machines where a 0.25 inch shank is accepted. The downcut geometry makes it particularly well-matched for routing and profiling operations on laminates, plastics, composites, and non-ferrous materials where surface finish on the top face is critical. The right-hand cut with right-hand flute configuration is standard for conventional CNC spindle operation. The 0.375 inch length of cut keeps the tool rigid during passes, making it appropriate for shallow-pocket and profile work in both production and prototype environments.

Key Features

• Downcut flute geometry directs chips downward for clean top-surface finishes on laminates and composites
• Amorphous diamond coating reduces friction and extends tool life in abrasive materials
• Solid carbide construction provides rigidity and dimensional stability at operating speeds
• 20-degree helix angle balances cutting efficiency with edge strength on a 2-flute design
• Matched 0.25 inch cutter and shank diameter simplifies toolholder selection
• Single-end configuration with right-hand cut for standard CNC spindle compatibility

Compatibility

Designed for use in CNC machining centers and milling machines accepting a 0.25 inch round shank toolholder. No specific compatible machine models or replacement part numbers were identified in the available product data.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling professional. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank fully into a clean, properly sized collet or end mill holder and torque the retention mechanism to the toolholder manufacturer specification. Verify runout with a dial indicator before beginning a cut, as excessive runout will reduce tool life and surface finish quality.