Accupro 313164 Square End Mill 3/8 in 2 Flute Carbide Zrn

Product Description

The ACCUPRO 313164 is a solid carbide square end mill designed for precision material removal in milling operations. Built from micrograin carbide, it delivers the hardness and wear resistance needed for demanding cutting applications. The 3/8 inch diameter cutter features a 2-flute, right-hand spiral flute geometry with a 45-degree helix angle, which promotes efficient chip evacuation and smooth cutting action. A ZrN (zirconium nitride) coating adds surface hardness and reduces friction at the cutting edge. With a 1/2 inch length of cut and 2-1/2 inch overall length, this is a stub-length tool suited for rigidity in tight clearance setups. Licensed machinists and CNC operators install this tool in standard collet or end mill holders.

This end mill is applicable to general-purpose milling in ferrous and non-ferrous materials where a high-helix, coated carbide tool is appropriate. The stub length format reduces deflection and improves surface finish in shallow-depth profiling, slotting, and contouring operations. The centercutting design allows plunge entry, adding versatility to the tool path. It is a single-end tool, meaning once the cutting end is worn, the tool is replaced rather than re-indexed. Typical use is in CNC machining centers and manual mills running at speeds matched to the workpiece material and coating type.

Key Features

• Micrograin solid carbide construction for superior hardness and edge retention
• ZrN coating reduces friction and extends tool life in demanding cuts
• 45-degree right-hand helix promotes aggressive chip evacuation
• Centercutting geometry allows direct plunge entry into workpiece
• Stub length format maximizes rigidity and minimizes deflection
• Right-hand cutting direction compatible with standard spindle rotation

Compatibility

Designed as a direct-fit replacement for standard 3/8 inch shank end mill holders, collet chucks, and milling adapters accepting a 3/8 inch straight shank tool.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and power is locked out before inserting or removing the tool. Seat the shank fully into the collet or holder to the recommended engagement depth before tightening. Verify runout with a dial indicator after tool changes, as excessive runout accelerates edge wear and reduces surface finish quality.