Accupro 12177083 Square End Mill 5/16 Inch 4 Flute Carbide

Product Description

The ACCUPRO 12177083 is a 4-flute solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. It features a 5/16 inch cutting diameter with a 13/16 inch length of cut and a 2-1/2 inch overall length. The AlTiN (aluminum titanium nitride) coating provides elevated heat resistance and extended tool life in high-speed applications. A 40-degree helix angle combined with spiral flute geometry promotes efficient chip evacuation and smooth cutting action. This tool is installed and used by machinists, tool-and-die specialists, and CNC operators in production and job shop environments.

This end mill is suited for slotting, profiling, and peripheral milling operations on machining centers and CNC milling machines. The centercutting design allows plunge entry, making it versatile for pocketing operations. The right-hand cut and right-hand flute configuration is standard for conventional CNC spindle rotation. Micrograin carbide substrate supports tight tolerances and consistent performance in hardened steels, stainless, and cast iron. The 5/16 inch shank diameter matches the cutting diameter for direct collet or end mill holder mounting without a reducer.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance
• AlTiN coating for high-temperature and abrasion resistance
• 40-degree spiral helix angle promotes chip flow and reduces chatter
• Centercutting geometry allows direct plunge milling
• Right-hand cut and right-hand flute for standard CNC spindle use
• Mill diameter tolerance of +0.001 / -0.000 inches for close-tolerance work

Compatibility

Designed as a standard 5/16 inch shank square end mill compatible with collet chucks, end mill holders, and shrink-fit tooling systems accepting a 5/16 inch shank diameter on CNC vertical and horizontal milling machines.

Installation Notes

This tool is installed by qualified machinists or CNC setup technicians. Ensure the spindle is fully stopped and the machine is in an e-stop or lockout state before changing tooling. Seat the shank fully into the collet or holder to the minimum engagement depth recommended by the holder manufacturer. Verify runout with a dial indicator after installation before beginning a cut.