Accupro 312958 Square End Mill 3/16 in 2 Flute Carbide

Product Description

The ACCUPRO 312958 is a solid carbide square end mill designed for precision milling of metals and engineered materials. It features a 3/16 inch diameter with a 5/16 inch length of cut and a 2 inch overall length, making it a stub-length tool suited for rigid, low-deflection cutting. The 45-degree helix angle promotes smooth chip evacuation and reduces cutting forces. With a micrograin carbide substrate and bright/uncoated finish, this end mill is well matched to aluminum, brass, and mild steel applications where a coating is not required. It is a single-end, right-hand cut, right-hand spiral tool installed by machinists and tool-and-die professionals in CNC and manual milling operations.

This end mill is used in light-to-medium material removal operations where a short, stiff tool is preferred to minimize vibration and chatter. The stub length configuration makes it a strong choice for shallow pocketing, slotting, and peripheral milling on vertical machining centers and knee mills. The centercutting design allows direct plunge entry into the workpiece without a pre-drilled pilot hole. Its 3/16 inch shank diameter matches standard ER and straight-shank collet systems commonly found in production and prototype machining environments.

Key Features

• Solid micrograin carbide construction for wear resistance and edge retention
• 45-degree helix angle promotes efficient chip evacuation and smooth cutting action
• Centercutting geometry allows direct plunge milling without a pilot hole
• Stub length body provides increased rigidity and reduced deflection at small diameters
• Bright/uncoated finish suitable for non-ferrous metals and materials where coating interaction is undesirable
• Right-hand cut and right-hand spiral flute direction compatible with standard spindle rotation

Compatibility

Designed as an OEM-style cutting tool for use in CNC machining centers, knee mills, and manual milling machines equipped with collet toolholding systems that accept a 3/16 inch straight shank.

Installation Notes

Installation is performed by machinists using a collet chuck or end mill holder torqued to the toolholder manufacturer's specification. Ensure the shank is fully seated and clean before clamping to prevent runout. Verify spindle rotation direction matches the right-hand cut designation before engaging the workpiece. Follow shop-specific speeds and feeds guidelines for carbide tooling in the target material.