Accupro 12185115 Square End Mill 4 Flute Solid Carbide Altin

Product Description

The ACCUPRO 12185115 is a double-end, four-flute square end mill ground from solid micrograin carbide and finished with an AlTiN coating. It carries a 0.125-inch cutting diameter, a 0.375-inch length of cut, a 0.375-inch shank diameter, and a 3-inch overall length. The 40-degree spiral helix promotes efficient chip evacuation and reduces heat at the cutting edge. AlTiN finish adds hardness and oxidation resistance for extended tool life in ferrous and high-temperature alloys. The centercutting geometry allows plunge entry, making this mill suitable for slotting, profiling, and pocket milling operations without a pre-drilled hole.

This end mill is used in CNC machining centers, knee mills, and manual mills wherever tight-tolerance milling is required in steel, stainless steel, cast iron, and similar materials. The double-end configuration provides a second usable cutting end, reducing per-cut tooling cost in production environments. Right-hand cut and right-hand flute geometry is standard for conventional spindle-direction setups. This tool is appropriate for machinists, toolmakers, and job-shop operators running general-purpose milling work at small diameters requiring dimensional precision.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance at small diameters
• AlTiN coating provides oxidation resistance and extended tool life in ferrous materials
• 40-degree helix angle promotes chip flow and reduces cutting forces
• Centercutting design allows direct plunge entry without pre-drilling
• Double-end configuration yields two usable cutting ends per tool
• Right-hand cut, right-hand flute for standard spindle direction compatibility

Compatibility

Designed as a general-purpose replacement or production end mill for CNC and manual milling applications requiring a 0.125-inch square end mill with a 0.375-inch shank.

Installation Notes

Installation is performed by a machinist or toolmaker using an appropriate collet or end mill holder sized for the 0.375-inch shank diameter. Verify runout and holder concentricity before cutting to maintain diameter tolerance of +0.000 to -0.002 inches. Ensure the spindle and feed parameters match the material being cut before engaging the tool. Inspect both cutting ends for chipping before use and before switching to the second end.