Accupro 12462830 Square End Mill 0.025 in 4 Flute Altin

Product Description

The ACCUPRO 12462830 is a solid carbide square end mill designed for high-precision milling in demanding machining environments. With a 0.025 inch cutting diameter and a 0.075 inch length of cut, this tool is built for fine-detail work in tight geometries. The four-flute, right-hand spiral configuration with a 30-degree helix angle promotes efficient chip evacuation and smooth cutting action. An AlTiN (aluminum titanium nitride) coating improves heat resistance and extends tool life when cutting hardened steels, stainless, and high-temperature alloys. The micrograin carbide substrate adds rigidity and edge retention critical for small-diameter work.

This end mill is suited for CNC milling operations requiring tight tolerances and fine surface finishes on small features. Typical applications include die and mold work, medical component machining, and precision aerospace parts where minimal tool runout and consistent edge geometry are essential. The single-end configuration and regular-length designation make it a standard fitment in toolholders and collet chucks sized for a 0.125 inch shank. It is center-cutting, allowing plunge entry where required.

Key Features

• 0.025 inch cutting diameter with mill diameter tolerance of +0.0000 / -0.0010 inches for consistent sizing
• AlTiN coating for elevated heat and wear resistance in ferrous and high-temp alloy cutting
• Micrograin solid carbide construction for rigidity and sharp edge retention at small diameters
• 4-flute right-hand spiral with 30-degree helix angle for smooth chip flow
• Center-cutting geometry allows direct plunge entry
• 0.125 inch shank diameter with tight shank tolerance of -0.0001 / -0.0003 inches for secure toolholder fit

Compatibility

Designed for use in CNC machining centers and milling machines equipped with collet chucks or toolholders accepting a 0.125 inch round shank. Suitable for right-hand spindle rotation.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Ensure the spindle is fully powered down and locked before changing tooling. Seat the shank fully into the collet or toolholder to the recommended gauge line and torque the retention mechanism per the toolholder manufacturer specifications. At 0.025 inch diameter, minimize runout at the spindle and toolholder interface, as even small deviations can cause premature tool breakage.