Accupro 314758 Square End Mill 3/8 in 3 Flute Carbide Zrn

Product Description

The ACCUPRO 314758 is a solid carbide square end mill designed for precision milling operations in metalworking and machining environments. It features a 3/8-inch diameter, a 1-1/2-inch length of cut, and a 4-inch overall length. The three-flute, right-hand cutting geometry with a 37-degree helix angle promotes efficient chip evacuation and smooth cutting action. A zirconium nitride (ZrN) coating increases surface hardness and heat resistance, extending tool life in demanding cutting conditions. This end mill is center-cutting and intended for use by machinists and tool-and-die professionals working with CNC mills or manual milling machines.

This end mill suits general-purpose and finishing operations in steel, stainless steel, cast iron, and similar ferrous materials. The ZrN coating performs well in dry or semi-dry cutting environments where heat buildup is a concern. The 3/8-inch shank diameter fits standard ER collet chucks and end mill holders commonly found in production and job-shop settings. Its solid carbide micrograin construction is appropriate for applications requiring tight tolerances and consistent surface finish.

Key Features

• 3/8-inch milling diameter with a mill diameter tolerance of +0.000/-0.005 inches for predictable fit and finish
• 1-1/2-inch length of cut (LOC range 1.5000 to 2.0000 inches) for moderate-depth slotting and profiling
• 37-degree right-hand helix with spiral flute geometry promotes efficient chip flow and reduces chatter
• ZrN (zirconium nitride) coating improves heat resistance and extends tool life
• Solid carbide micrograin construction delivers rigidity and edge retention in hard materials
• Center-cutting design allows direct plunge entry without a pre-drilled pilot hole

Compatibility

Designed as a direct-fit replacement or standard tooling selection for 3/8-inch end mill holders, ER collet systems, and compatible CNC or manual milling machine spindles requiring a 3/8-inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holding and runout tolerance. Ensure the spindle is fully powered down and locked out before changing tooling. Seat the shank fully in the collet or holder to the recommended grip length and torque the retention hardware to the tool holder specification. Verify runout with a dial indicator before beginning a production cut.