Accupro 314709 Square End Mill 3/8 in 3 Flute Carbide Zrn

Product Description

The ACCUPRO 314709 is a 3-flute solid carbide square end mill designed for precision milling operations in metal fabrication, toolroom work, and production machining. It features a 3/8 inch cutting diameter, a 1/2 inch length of cut, and a 37-degree helix angle that promotes efficient chip evacuation and smooth cutting action. The tool is coated with zirconium nitride (ZrN), which improves surface hardness and wear resistance compared to uncoated carbide. Micrograin carbide construction supports tight tolerances and consistent edge integrity over the tool life. Installed and changed by machinists and toolroom technicians, this end mill suits CNC machining centers and manual knee mills alike.

This end mill is suited for slotting, profiling, and light-to-medium material removal in steel, aluminum, and similar machinable alloys. The single-end, right-hand cutting and right-hand flute configuration is standard for conventional and climb milling on vertical machining centers. The centercutting design allows plunge entry, adding flexibility to programmed toolpaths. The 3/8 inch shank diameter fits standard ER collets and end mill holders commonly found in production and job shop environments.

Key Features

• 3/8 inch cutting diameter with a mill diameter tolerance of +0.000 / -0.005 inches for consistent fit and finish
• 37-degree helix angle promotes chip flow and reduces heat buildup during cutting
• ZrN coating increases surface hardness and extends tool life in ferrous and non-ferrous materials
• Micrograin solid carbide substrate supports sharp, stable cutting edges
• Centercutting geometry allows direct plunge milling without a pre-drilled pilot
• Right-hand cut and right-hand spiral flutes compatible with standard spindle rotation

Compatibility

Designed as an OEM-style replacement or direct-use end mill for standard 3/8 inch end mill holders, ER collet chucks, and shrink-fit tooling systems used in CNC and manual vertical milling applications.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and the machine is in an energy-isolated state before changing tooling. Seat the shank to the full recommended engagement depth in the holder and torque the retention screw or collet nut per the toolholder manufacturer specifications. Inspect the cutting edges for chips or wear before each use.