Accupro 12181838 Square End Mill 5/16 in 2 Flute Carbide

Product Description

The ACCUPRO 12181838 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. With a 5/16 inch cutting diameter, 1-1/2 inch length of cut, and a 6 inch overall length, this is an extra-long configuration suited for deep-reach profiling and slotting work. The AlTiN coating improves heat resistance and extends tool life in hard and abrasive materials. A 40-degree helix angle and micrograin carbide substrate contribute to clean chip evacuation and edge stability under demanding cutting conditions. Licensed machinists and CNC operators are the primary users of this tool.

This end mill fits standard 5/16 inch collet or end mill holders and is appropriate for use in vertical machining centers, CNC knee mills, and manual milling machines. The extra-long OAL of 6 inches makes it particularly useful when workpiece geometry or fixturing requires extended reach beyond what a standard-length end mill can provide. It is suited for milling steel, stainless steel, cast iron, and other ferrous materials where the AlTiN finish provides thermal protection. The centercutting design allows for direct plunge entry into the workpiece.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention
• AlTiN finish for high-heat resistance and extended tool life in ferrous materials
• 40-degree spiral helix angle promotes efficient chip evacuation
• Centercutting geometry allows direct plunge milling
• Right-hand cut and right-hand flute configuration for standard spindle use
• Extra-long 6 inch OAL enables deep-reach and clearance-critical applications

Compatibility

Designed to fit standard 5/16 inch end mill holders, collet chucks, and shrink-fit tooling used in CNC and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before mounting. Verify that the collet or holder is rated for the 5/16 inch shank diameter and that runout is within acceptable tolerance before beginning a cut. Follow applicable shop safety practices and machine manufacturer guidelines for tool overhang and feed-rate settings.