Accupro 12276805 Square End Mill 0.028 in 4 Flute Carbide

Product Description

The ACCUPRO 12276805 is a solid carbide, four-flute square end mill designed for precision milling operations in metalworking and machining applications. With a 0.028-inch cutting diameter and a 0.084-inch length of cut, this tool is built for fine-detail work and micro-milling in tight geometries. The micrograin carbide construction delivers the rigidity and edge retention required for hard materials at small diameters. A 30-degree helix angle supports efficient chip evacuation while maintaining a clean cut surface. The bright, uncoated finish makes it well suited for non-ferrous metals and plastics where coating adhesion or heat buildup is a concern.

This end mill is intended for use in CNC machining centers, vertical mills, and high-speed spindle setups where small-diameter precision cutting is required. The single-end configuration, right-hand cut, and right-hand spiral flute geometry are standard for general-purpose milling. It is typically used in tool and die, mold making, medical device manufacturing, and precision parts production where tight tolerances and minimal runout are critical. The 1/8-inch shank diameter fits standard collets and toolholders common in both bench-top and production CNC equipment.

Key Features

• 0.028-inch cutting diameter with micrograin solid carbide construction for edge retention at micro scale
• Four spiral flutes with 30-degree helix for efficient chip removal and improved finish quality
• Centercutting geometry allows plunge entry into the workpiece
• Bright, uncoated finish suited for non-ferrous metals, aluminum, and plastics
• Right-hand cut and right-hand flute direction for standard spindle operation
• Mill diameter tolerance of +0.0000 / -0.0010 inches for consistent sizing

Compatibility

Designed as an OEM-style replacement and standard-fit tool for CNC machining centers and manual mills using 1/8-inch collets or toolholders accepting a 0.125-inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully powered down and locked before changing tooling. Seat the shank fully into the collet to the recommended grip depth and torque the collet nut to the toolholder manufacturer specification. At micro diameters, runout at the cutting edge is critical — verify with a dial indicator before initiating a cut to avoid premature tool breakage.