Accupro 12178994 Square End Mill 1/16 in 4 Flute Carbide

Product Description

The ACCUPRO 12178994 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. Built from micrograin carbide and finished with an nACRo coating, this 4-flute, stub-length tool delivers wear resistance and thermal stability in demanding cutting environments. It features a 30-degree spiral flute with right-hand cut and right-hand flute orientation. At 0.0625 inches in diameter with a 0.125-inch length of cut, this end mill is engineered for fine-detail work in tight geometries. Centercutting capability allows plunge entry without a pilot hole. Machinists and CNC tool crib operators specify this tool for small-feature milling on ferrous and non-ferrous materials.

This end mill is suited for light-duty slot milling, contouring, and profiling in CNC machining centers and manual mills. The stub-length configuration reduces deflection at small diameters, making it appropriate for high-precision work in mold making, die work, fixture manufacturing, and fine-detail part production. Its 1/8-inch shank diameter is compatible with standard collets and tool holders in that bore size. The nACRo coating provides elevated hardness and lubricity, extending tool life in difficult-to-machine alloys and hardened steels.

Key Features

• Micrograin solid carbide construction for rigidity and edge retention at small diameters
• nACRo coating for improved wear resistance and reduced friction in hard materials
• 4-flute spiral design with 30-degree helix angle for efficient chip evacuation
• Centercutting geometry allows direct plunge milling without pre-drilling
• Stub-length configuration minimizes deflection for tighter tolerance work
• Right-hand cut and right-hand flute for standard CNC and manual mill spindles

Compatibility

Designed for use in standard CNC machining centers and manual milling machines equipped with 1/8-inch collets or tool holders. Fits standard ER and straight-bore collet systems accepting a 1/8-inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully into the collet to the recommended engagement depth and torque the collet nut per the tool holder manufacturer's specifications. Inspect the cutting edges for chips or damage before each use, especially at this diameter where edge breakage may not be immediately visible.