Accupro 312939 Square End Mill 1/8 in 2 Flute Solid Carbide

Product Description

The ACCUPRO 312939 is a square end mill designed for precision milling operations in metalworking and machining environments. Built from micrograin solid carbide, this tool offers high rigidity and wear resistance compared to high-speed steel alternatives. It features a 1/8 inch cutting diameter, a 3/4 inch length of cut, and a 2 inch overall length. The ZrN (zirconium nitride) coating reduces friction and extends tool life in ferrous and non-ferrous applications. With a 45-degree helix angle and spiral flute geometry, it promotes efficient chip evacuation and smooth cutting action. This end mill is installed and operated by machinists and CNC programmers in production and job-shop settings.

This end mill is suited for slotting, profiling, and peripheral milling in light to medium stock removal applications. The centercutting design allows for plunge entry directly into the workpiece. The 1/8 inch shank diameter fits standard collet chucks and ER-style toolholders used on vertical machining centers and CNC routers. Right-hand cut and right-hand flute orientation follow standard spindle conventions for most CNC and manual milling setups.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• ZrN coating reduces friction and extends tool life
• 45-degree helix angle promotes efficient chip evacuation
• Centercutting geometry allows direct plunge entry
• 2-flute design suits slotting and profiling in a range of materials
• Right-hand cut and right-hand flute for standard spindle compatibility

Compatibility

Designed as an OEM-style replacement and standard tooling option for 1/8 inch collet chucks and ER-style toolholders on vertical machining centers, CNC routers, and manual milling machines.

Installation Notes

Installation is performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and the toolholder is clean and free of debris before seating the end mill. Follow the toolholder manufacturer torque specifications when tightening collet nuts. Verify runout with a dial indicator before beginning production cuts.