Harvey Tool 977408 Square End Mill 1/8 in 3 Flute Carbide

Product Description

The HARVEY TOOL 977408 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. With a 1/8 inch cutting diameter and a 3/16 inch length of cut, this three-flute tool is built for tight-tolerance work in confined areas. The 30-degree helix angle promotes smooth chip evacuation and reduces cutting forces. The bright, uncoated finish makes this tool suitable for a range of materials without the coating compatibility concerns of some coated alternatives. Machinists and tool-and-die professionals rely on this geometry for slotting, profiling, and finishing passes at small diameters.

This end mill is suited for CNC machining centers and manual mills where small-diameter, high-precision work is required. The extended reach configuration, with a 2.25 inch reach length and 4 inch overall length, allows access to deeper pockets and stepped features without tool holder interference. The right-hand cutting and right-hand flute direction are standard for conventional and climb milling on most machining setups. Centercutting capability enables direct plunge entry, expanding its use in pocket milling and ramp-entry operations.

Key Features

• 1/8 inch cutting diameter with 3/16 inch length of cut for fine detail and slotting work
• 3 flutes with 30-degree helix angle for efficient chip evacuation at small diameters
• Solid carbide construction for rigidity and wear resistance
• Extended reach design with 2.25 inch reach length for deep-pocket access
• Centercutting geometry allows direct plunge milling
• Bright, uncoated finish compatible with a broad range of workpiece materials

Compatibility

Designed as an OEM-style replacement or direct-use tooling for CNC machining centers and manual mills accepting a 1/8 inch shank diameter collet or end mill holder.

Installation Notes

Installation should be performed by a qualified machinist. Ensure the tool holder and collet are clean and within specified runout tolerances before clamping to avoid premature tool wear or breakage. At 1/8 inch diameter, solid carbide end mills are sensitive to side load and deflection, so appropriate feed and speed parameters should be verified before full-depth cuts. Power down and lock out the spindle before installing or removing any cutting tool.