Accupro 12276809 Square End Mill 0.032 in 4 Flute Carbide

Product Description

The ACCUPRO 12276809 is a solid carbide square end mill designed for precision milling operations in metal, composites, and engineering plastics. With a 0.032 inch cutting diameter and a 0.096 inch length of cut, this tool is built for small-feature work including slots, pockets, and contour passes where tight tolerances are required. The micrograin carbide substrate supports edge sharpness and wear resistance in demanding cuts. A 30-degree helix angle promotes chip evacuation and reduces cutting forces at small diameters. This end mill is used by machinists and tool-and-die professionals working on manual mills, CNC machining centers, and precision jig-boring setups.

This end mill suits applications in prototype shops, mold and die work, aerospace component machining, and electronics fixture manufacturing where small-diameter, high-precision cuts are common. The bright uncoated finish makes it a practical choice for non-ferrous metals such as aluminum and copper alloys, as well as plastics where coating adhesion or edge buildup could compromise surface finish. The single-end configuration is standard for this diameter class.

Key Features

• 0.032 inch cutting diameter with a mill diameter tolerance of +0.0000 / -0.0010 inches for tight-tolerance work
• Micrograin solid carbide construction for edge retention and rigidity at small diameters
• 4-flute spiral design with 30-degree helix angle for efficient chip evacuation
• Center-cutting geometry allows direct plunge entry into workpiece material
• Right-hand cut and right-hand flute direction — compatible with standard spindle rotation
• Bright uncoated finish suited for non-ferrous metals and plastics

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers and manual mills accepting a 0.125 inch shank diameter collet or toolholder. Part of the ACCUPRO ASQSC4-CC-30H series.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the 0.125 inch shank fully into a clean, properly sized collet or end mill holder and torque to the toolholder manufacturer specification. Verify runout with a dial indicator before engaging the cut, as runout is especially critical at diameters below 0.050 inches.