Harvey Tool 956831-C3 Square End Mill 1/32 in Carbide

Product Description

The HARVEY TOOL 956831-C3 is a miniature square end mill designed for precision milling in tight geometries and small-feature work. Built from solid carbide with an AlTiN finish, this centercutting tool delivers hardness and heat resistance suited for high-speed passes in ferrous and non-ferrous materials. It runs a 1/32-inch cutting diameter with a 3/32-inch length of cut and a 30-degree helix angle, balancing chip evacuation with edge stability at micro-scale. The 4-flute configuration increases feed rates and surface finish quality over 2-flute alternatives. Machinists and toolroom operators working on CNC machining centers install and apply this tool.

This end mill fits applications where small-feature detail is required, including mold and die work, medical component machining, and precision aerospace part finishing. The 1/8-inch shank diameter makes it compatible with standard ER collet systems used on vertical machining centers and CNC routers handling micro-work. The 1-1/2-inch overall length keeps the tool rigid in setups where overhang must be minimized. Right-hand cut and right-hand flute geometry follow standard CNC spindle conventions. The reach length of 5/32 inch provides just enough clearance for stepped or recessed features without sacrificing rigidity.

Key Features

• AlTiN coating provides oxidation resistance and extended tool life in ferrous materials
• Centercutting geometry allows plunge entry without a pre-drilled pilot hole
• 30-degree helix angle balances chip flow and radial cutting forces at small diameters
• 4-flute design supports higher feed rates and improved surface finish
• Solid carbide construction maintains rigidity at 1/32-inch diameter where HSS tools deflect
• Right-hand cut and right-hand flute match standard CNC spindle direction without special setup

Compatibility

Designed for use in standard 1/8-inch ER collet chucks and compatible collet systems on CNC vertical machining centers and toolroom mills configured for micro-end-mill work.

Installation Notes

Installation is performed by a machinist or toolroom technician. Power down and lock out the spindle before changing tooling. Seat the 1/8-inch shank fully in a clean, properly sized ER collet and torque the collet nut to the collet manufacturer specification. At 1/32-inch diameter, runout control is critical — inspect collet and holder for contamination or wear before use, as even minor runout will cause premature breakage at this diameter.