Accupro 12181980 Square End Mill 5/16 in 3 Flute Carbide

Product Description

The ACCUPRO 12181980 is a solid carbide square end mill designed for precision milling operations in metalworking and machining environments. It features a 5/16 inch cutting diameter, a 3/4 inch length of cut, and a 2-1/2 inch overall length. Built from micrograin solid carbide, this tool delivers consistent edge integrity at higher feed rates than high-speed steel alternatives. The 40-degree helix angle promotes efficient chip evacuation and reduced cutting forces. Centercutting geometry allows for plunge entry as well as conventional side milling. This end mill is installed and used by machinists and CNC operators in job shop, toolroom, and production environments.

This end mill is suited for milling slots, pockets, contours, and profiles in ferrous and non-ferrous materials. The uncoated finish makes it a practical choice for applications where re-sharpening is expected or where a specific coating is not required by the operation. Its regular length designation and 5/16 inch shank diameter make it compatible with standard ER collet chucks, end mill holders, and shrink-fit tooling systems commonly found on vertical and horizontal machining centers.

Key Features

• Micrograin solid carbide construction for wear resistance and edge retention
• 40-degree helix angle promotes aggressive chip evacuation
• Centercutting design allows plunge milling and ramp entry
• Right-hand cut, right-hand spiral flute configuration
• 3 flutes balance chip clearance and surface finish capability
• Uncoated finish suitable for regrinding and general-purpose use

Compatibility

Designed as an OEM-style replacement or direct tooling selection for standard 5/16 inch end mill holders, ER collet systems, and shrink-fit toolholders used on vertical and horizontal CNC machining centers.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and the controller is in an e-stop or safe state before loading or changing tooling. Use a calibrated torque wrench when tightening collet nuts or set screws to the toolholder manufacturer specification. Verify runout with a dial indicator after installation before beginning a cut.