Accupro 12181207 Square End Mill 5/16 in 2 Flute Carbide

Product Description

The ACCUPRO 12181207 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. Measuring 5/16 inches in diameter with a 3/4-inch length of cut and 4-inch overall length, this tool is built for demanding cutting applications where dimensional accuracy and tool life are critical. The TiCN (Titanium Carbonitride) coating reduces friction and increases surface hardness, extending tool life in abrasive materials. The 40-degree helix angle promotes efficient chip evacuation and smooth cutting action. Licensed machinists, toolroom operators, and CNC programmers rely on this class of end mill for slotting, profiling, and peripheral milling operations.

This end mill is suited for use in vertical machining centers, CNC mills, and manual knee mills across job shop and production environments. The long-reach configuration, with a 2-1/2-inch reach length, allows access to deeper pockets and stepped features without requiring extended-reach adapters. The right-hand cut and right-hand flute spiral are standard for conventional and climb milling on most machine tool setups. Micrograin carbide construction supports high spindle speeds and tighter tolerances than standard carbide grades.

Key Features

• 5/16 inch diameter with matched 5/16 inch shank for direct collet or end mill holder mounting
• TiCN coating for improved wear resistance and reduced built-up edge in abrasive materials
• 40-degree helix angle for efficient chip evacuation and reduced cutting forces
• Centercutting design allows plunge entry directly into the workpiece
• Micrograin carbide substrate supports high-speed machining and extended tool life
• Long-reach configuration with 2-1/2 inch reach length for deep-pocket access

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide square end mill for standard 5/16 inch collets and end mill holders on CNC vertical machining centers and manual mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully into the collet or end mill holder to the recommended engagement depth and torque the retention mechanism to the tool holder manufacturer specification. Verify runout with a dial indicator before beginning a production cut.