Accupro 313114 Square End Mill 5/16 in 2 Flute Carbide Zrn

Product Description

The ACCUPRO 313114 is a solid carbide square end mill designed for precision milling operations in metal, composites, and engineered plastics. It features a 5/16 inch diameter with a 13/16 inch length of cut and a 45-degree helix angle that promotes efficient chip evacuation and reduced cutting forces. The ZrN (zirconium nitride) coating improves surface hardness and heat resistance, extending tool life in demanding applications. With two flutes and a right-hand spiral flute configuration, this end mill is suited for general-purpose slotting, profiling, and peripheral milling. It is installed and used by machinists and tool-and-die professionals working in CNC machining centers and manual mills.

This end mill is appropriate for use in both job shop and production environments where a regular-length, single-end carbide tool is required. The micrograin carbide grade provides a balance of toughness and wear resistance suitable for ferrous and non-ferrous workpiece materials. The centercutting capability allows plunge cuts as well as conventional side milling operations. The 5/16 inch shank diameter matches the cutter diameter, making it compatible with standard collet and end mill holder setups found in most CNC and manual milling machines.

Key Features

• 5/16 inch cutter diameter with matching 5/16 inch shank for direct collet fitment
• ZrN coating provides elevated surface hardness and thermal resistance for extended tool life
• 45-degree helix angle promotes efficient chip flow and reduces cutting forces
• Micrograin solid carbide construction for rigidity and wear resistance
• Centercutting geometry allows both plunge and side milling operations
• Right-hand cut and right-hand flute spiral for standard spindle direction compatibility

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide end mill for standard 5/16 inch collets and end mill holders used in CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank fully into the collet or end mill holder and torque the retention mechanism according to the holder manufacturer's specifications. Verify runout with a dial indicator before beginning any cut to confirm proper seating and minimize premature tool wear.