Accupro 12178864 Square End Mill 3/8 Inch 2 Flute Carbide

Product Description

The ACCUPRO 12178864 is a solid carbide square end mill designed for precision milling operations in metal, alloy, and composite materials. It features a 3/8 inch cutting diameter, a 3 inch length of cut, and a 6 inch overall length. The micrograin carbide construction provides hardness and wear resistance needed for demanding cutting conditions. A 40-degree helix angle combined with a spiral flute geometry promotes efficient chip evacuation and stable cutting performance. The nACRo finish adds a hard, low-friction coating layer that extends tool life in abrasive or high-temperature applications. This tool is installed and operated by machinists and CNC setup technicians in production and job-shop environments.

This end mill is suited for general-purpose and high-performance milling on vertical and horizontal machining centers. The centercutting design allows plunge entry directly into the workpiece, enabling slot milling, pocket milling, and ramping operations. The right-hand cut and right-hand flute configuration match standard spindle rotation. With a 3/8 inch shank diameter matching the cutting diameter, it seats directly into standard ER collets, end mill holders, or shrink-fit toolholders of the same bore size.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance
• nACRo finish coating for extended tool life in abrasive cutting conditions
• 40-degree helix angle promotes aggressive chip evacuation and smooth cutting action
• Centercutting geometry allows direct plunge entry for slot and pocket milling
• 2-flute design provides chip clearance in softer metals and gummy alloys
• Right-hand cut and right-hand flute for standard CNC spindle compatibility

Compatibility

Designed as a standard 3/8 inch shank solid carbide square end mill compatible with ER collet chucks, end mill holders, and shrink-fit toolholders bored to 3/8 inch.

Installation Notes

Installation is performed by a machinist or CNC technician. Power down and lock out the machine spindle before loading or changing the tool. Seat the shank fully into the toolholder to the minimum engagement depth recommended by the holder manufacturer, and torque the retention mechanism according to the toolholder specification. Inspect the cutting edges for chips or damage before each use; carbide is brittle and should never be used if edge integrity is compromised.