Harvey Tool 998608-C4 Square End Mill 1/8 in 2 Flute Carbide

Product Description

The HARVEY TOOL 998608-C4 is a solid carbide square end mill designed for precision milling operations in demanding machining environments. With a 1/8 inch cutting diameter and 3/8 inch length of cut, this tool is suited for tight-tolerance work in small-feature applications. It features an amorphous diamond coating, a 20-degree helix angle, and a downcut flute geometry that helps reduce surface tearing on finish cuts. The 2-flute, single-end configuration and right-hand cutting direction make it straightforward to apply in standard CNC and manual milling setups. Machinists and tooling professionals working with abrasive or composite materials will find the diamond coating particularly relevant to tool life.

This end mill is appropriate for use in vertical machining centers, CNC routers, and manual knee mills where small-diameter tooling is required. The centercutting capability allows plunge entry without a pre-drilled pilot hole, adding flexibility to the machining process. The 1/8 inch shank diameter matches common collet and chuck sizes used in precision machining operations. It is well suited for finish milling, slotting, and profiling in non-ferrous metals, composites, graphite, and other abrasive materials where an amorphous diamond coating provides measurable wear resistance.

Key Features

• Amorphous diamond coating for extended tool life in abrasive and composite materials
• Downcut flute geometry reduces surface fiber lifting on finish passes
• Centercutting design allows direct plunge entry without pilot drilling
• 20-degree helix angle balances chip evacuation and cutting edge stability
• Right-hand cut and right-hand flute direction for standard spindle compatibility
• Solid carbide construction for rigidity and dimensional accuracy in small-diameter tooling

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide square end mill for CNC and manual milling applications requiring a 1/8 inch diameter, 1/8 inch shank tool with amorphous diamond coating.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Use a properly sized collet or end mill holder matching the 1/8 inch shank diameter and torque to the machine manufacturer's specification. Verify runout with a dial indicator after tool installation before beginning a cut, as runout at small diameters significantly affects tool life and part accuracy.