Accupro 313111 Square End Mill 5/16 in 2 Flute Carbide

Product Description

The ACCUPRO 313111 is a solid carbide square end mill designed for precision milling in metal fabrication, tool and die, and general machining applications. It features a 5/16-inch diameter with a matching 5/16-inch shank and a 13/16-inch length of cut, making it well suited for stub-length work where rigidity is a priority. The 45-degree helix angle promotes efficient chip evacuation and smooth cutting action. Micrograin carbide construction provides hardness and wear resistance across a range of workpiece materials. This is a single-end, right-hand cutting, right-hand spiral tool with no coating applied, shipped individually.

This end mill is intended for use in CNC machining centers and manual mills where a compact, high-rigidity cutting tool is required. The stub-length configuration limits deflection during aggressive cuts or when working in confined pockets. Machinists, toolroom technicians, and production CNC operators are the primary users. The bright uncoated finish makes it a straightforward choice for non-ferrous metals, plastics, and general-purpose ferrous applications where a coated tool is not specified.

Key Features

• Solid micrograin carbide construction for hardness and edge retention
• 45-degree helix angle for efficient chip flow and reduced cutting forces
• Stub-length design minimizes deflection and increases rigidity
• Center-cutting geometry allows plunge entry into workpieces
• Right-hand cut and right-hand spiral for standard spindle-direction compatibility
• Bright uncoated finish suitable for non-ferrous metals and general-purpose use

Compatibility

Designed as a standard 5/16-inch shank stub-length square end mill compatible with collet chucks, end mill holders, and shrink-fit tooling systems 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 the machine is in a safe, locked-out state before changing tooling. Seat the shank to the full recommended engagement depth in the tool holder and torque the retention hardware according to the tool holder manufacturer specifications. Verify runout at the cutting diameter before commencing a production cut.