Harvey Tool 923040 Square End Mill 0.04 in 3 Flute Carbide

Product Description

The HARVEY TOOL 923040 is a solid carbide square end mill engineered for tight-tolerance milling operations in a wide range of materials. With a 0.04-inch cutting diameter and a 13/64-inch (0.203-inch) length of cut, this tool is purpose-built for fine detail work, small-feature profiling, and slot milling where precision and rigidity matter. The 42-degree variable helix geometry reduces chatter and improves chip evacuation, making it well suited for demanding cuts in ferrous and non-ferrous materials. Machinists and toolmakers working in job shop, production, or prototype environments rely on tools in this class for consistent performance at micro-scale cutting diameters.

This end mill is appropriate for CNC machining centers and manual mills where small-diameter tooling is required for intricate part features, narrow slots, or finishing passes. Its 1/8-inch shank diameter makes it compatible with standard ER collet systems and small-diameter toolholders commonly found in precision machining setups. The bright, uncoated finish suits applications where coating interaction with the workpiece material is a concern, or where regrinding is part of the tool management workflow. Single-end configuration means the tool is replaced rather than flipped when the cutting end is worn.

Key Features

• 0.04-inch cutting diameter for fine detail and small-feature milling
• Variable helix design reduces harmonics and chatter during cutting
• 3-flute geometry balances chip clearance with core strength at small diameters
• Solid carbide construction provides rigidity and wear resistance
• Centercutting capable, allowing plunge entry into the workpiece
• Right-hand cut and right-hand flute direction for standard spindle operation

Compatibility

Designed as an OEM-style solid carbide square end mill for use in CNC machining centers and precision mills accepting a 1/8-inch shank diameter with standard collet or toolholder systems.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully into the collet or toolholder to the recommended minimum engagement depth before tightening. At 0.04-inch diameter, this tool is highly susceptible to breakage from side loading, runout, or improper feed and speed selection — verify toolholder runout before use.