Accupro 12182246 Square End Mill 5/16 in 3 Flute Carbide

Product Description

The ACCUPRO 12182246 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous metals. It features a 5/16 inch cutting diameter, a 1-5/8 inch length of cut, and a 4 inch overall length, placing it in the extra-long length category. The AlTiN (aluminum titanium nitride) coating improves heat resistance and extends tool life in high-speed dry or semi-dry machining operations. The 40-degree helix spiral flute geometry promotes efficient chip evacuation and reduces cutting forces. Machinists and tool-and-die professionals use this end mill for slotting, profiling, and peripheral milling on CNC machining centers and manual mills.

This end mill is suited for milling steel, stainless steel, cast iron, and similar materials where a hard, heat-resistant coating is required. The extra-long length of cut makes it appropriate for deep-pocket milling and applications requiring extended reach into a workpiece. The centercutting design allows plunge entry directly into the material without a pre-drilled hole. Right-hand cut and right-hand flute geometry are standard for conventional CNC spindle rotation. Solid micrograin carbide construction provides rigidity and edge retention in demanding production environments.

Key Features

• Solid micrograin carbide substrate for superior hardness and edge retention
• AlTiN coating for high-temperature resistance in dry and semi-dry machining
• 40-degree helix angle for improved chip evacuation and reduced cutting forces
• Centercutting design allows direct plunge entry without pre-drilling
• Extra-long length of cut (1-5/8 inches) for deep-pocket and extended-reach applications
• Right-hand cut, right-hand flute — compatible with standard CNC spindle rotation

Compatibility

Designed as a standard shank end mill for use in CNC machining centers, manual knee mills, and other machine tools equipped with collet or end mill holders accepting a 5/16 inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and machine is powered down before changing tooling. Secure the shank to the specified seating depth in the collet or tool holder and verify runout before running at full feed and speed. Do not exceed the tool manufacturer's recommended speeds and feeds for the workpiece material and coating type.