Harvey Tool 23205-C3 Undercut End Mill 5/64 in 2-flute Altin

Product Description

The HARVEY TOOL 23205-C3 is a single-end undercut end mill designed for machining operations that require relief behind the cutting edge. Built from solid carbide with an AlTiN coating, this tool handles hard and abrasive workpiece materials with improved heat resistance at the cutting zone. It carries a 270-degree wrap angle, a 2-flute right-hand cutting geometry, and a mill diameter of 0.0781 inches (5/64 inches). The 1.7mm (0.0670 inches) length of cut and 0.0450-inch neck diameter make it well suited for tight-clearance and undercut profiles. Machinists and CNC operators working in job shops, aerospace, or medical component manufacturing are the primary installers.

This undercut end mill is intended for use in CNC machining centers where undercutting, back-chamfering, or T-slot style profiling is required in small-format workpieces. The compact 5/64-inch diameter and 1/8-inch shank diameter suit it to fine-detail work in metals and hard alloys. The 0.2500-inch neck length provides clearance access into recessed features without excessive tool deflection. It is a single-end tool, so it is replaced rather than reversed when worn.

Key Features

• 270-degree wrap angle enables undercutting and back-wall engagement in a single pass
• AlTiN coating improves heat resistance and tool life in ferrous and hard alloy materials
• Solid carbide construction provides rigidity at small diameters where deflection is a concern
• 2-flute right-hand geometry supports chip evacuation in shallow undercut pockets
• 0.0450-inch neck diameter allows access into tight recessed features
• 1/8-inch shank diameter is compatible with standard collet toolholding systems

Compatibility

Designed as an OEM-style replacement or direct-use undercut end mill for CNC machining centers accepting a 1/8-inch shank diameter collet or toolholder.

Installation Notes

Installation is performed by a qualified CNC machinist or toolroom technician. Power down and lock out the spindle before changing tooling. Seat the 1/8-inch shank fully into the collet and torque the collet nut per the toolholder manufacturer's specification. At this diameter, runout control is critical — inspect the toolholder for wear before use and verify runout with a dial indicator before cutting.