Accupro 12181944 Square End Mill 15/64 in 3 Flute Carbide

Product Description

The ACCUPRO 12181944 is a solid carbide square end mill designed for precision milling operations in metal, composites, and other hard materials. With a 15/64 inch (0.2344 inch) cutting diameter and a 3/4 inch length of cut, this tool delivers consistent material removal in tight tolerances. The 3-flute, spiral geometry with a 40-degree helix angle promotes efficient chip evacuation and smooth cutting action. Built from micrograin solid carbide, it holds a sharp edge longer than high-speed steel alternatives. The centercutting design allows direct plunge entry without a pre-drilled pilot hole, making it suitable for slotting, profiling, and pocket milling.

This end mill fits standard 1/4 inch collets and tool holders, making it a practical choice for CNC machining centers and manual knee mills used in job shops, maintenance environments, and precision fabrication. The right-hand cut and right-hand flute configuration matches the most common spindle setups. Its regular length classification and 2-1/2 inch overall length keep deflection low during close-tolerance work. Machinists working on aluminum, steel, stainless, brass, and similar materials will find this uncoated carbide tool well-suited to general-purpose applications where a coating is not required or where regrinding is planned.

Key Features

• 15/64 inch (0.2344 inch) cutting diameter with a mill diameter tolerance of +0.000 / -0.002 inches for consistent fitment
• 3-flute spiral geometry with a 40-degree helix angle for efficient chip evacuation
• Centercutting design allows direct plunge milling without a pilot hole
• Micrograin solid carbide construction for extended tool life and edge retention
• Right-hand cut, right-hand flute — compatible with standard CNC and manual spindle setups
• Uncoated finish suitable for general-purpose use and regrinding

Compatibility

Designed for use in 1/4 inch collets and tool holders on CNC machining centers and manual milling machines where a regular-length, 3-flute square end mill is specified.

Installation Notes

Installation should be performed by a qualified machinist or toolroom professional. Power down and lock out the spindle before changing tooling. Seat the shank fully into the collet to the manufacturer-recommended engagement depth and torque the collet nut according to the tool holder specification. Verify runout with a dial indicator before beginning cuts; excessive runout accelerates edge wear and reduces dimensional accuracy.