Accupro 12183381 Square End Mill 3/4 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 12183381 is a solid carbide square end mill designed for precision milling operations in metalworking and machining environments. Built from micrograin solid carbide with an AlTiN finish, this tool delivers heat resistance and wear life suited to high-speed cutting in ferrous and non-ferrous materials. It features a 3/4 inch cutting diameter, a 3 inch length of cut, and a 6 inch overall length, placing it in the extra-long category for reach into deep pockets and cavities. The 40-degree helix angle promotes efficient chip evacuation and smooth cutting action. Installation and use are handled by machinists and CNC operators in production and job-shop environments.

This end mill is suited for milling slots, pockets, and contours in steel, stainless, cast iron, and similar workpiece materials. The centercutting geometry allows direct plunge entry without a pre-drilled hole. The extra-long overall length makes it a practical choice when standard-length tools cannot reach the required depth. Right-hand cut and right-hand flute configuration matches conventional CNC machining center spindle rotation. Four flutes provide a balance of chip room and surface finish quality appropriate for finishing and light roughing passes.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• AlTiN coating for elevated heat resistance in dry and semi-dry cutting
• 40-degree helix angle promotes efficient chip flow and reduced cutting force
• Centercutting design permits direct plunge milling
• Extra-long 6 inch OAL for deep-reach applications
• Right-hand cut and right-hand spiral flute for standard CNC spindle compatibility

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers and manual mills accepting a 3/4 inch straight shank collet or end mill holder.

Installation Notes

This tool is installed and operated by machinists using a 3/4 inch collet, end mill holder, or shrink-fit toolholder rated for the intended RPM and feed load. Ensure the machine spindle and toolholder are clean and free of debris before seating the shank. Shank diameter tolerance is -0.0001 to -0.0004 inches, so verify holder bore condition before use. Do not exceed the toolholder or machine spindle speed ratings, and follow shop-standard runout checks before cutting.