Accupro 12177159 Square End Mill 5/16 in 2 Flute Carbide

Product Description

The ACCUPRO 12177159 is a solid carbide square end mill designed for precise milling operations in metal and composite materials. With a 5/16-inch cutting diameter, a 5/8-inch length of cut, and a 40-degree helix angle, this tool delivers efficient chip evacuation and consistent surface finish. The AlTiN coating improves heat resistance and extends tool life in demanding cutting environments. Two spiral flutes with right-hand cut and right-hand flute orientation make this a standard single-end configuration. Extended reach of 2-5/8 inches adds versatility for deep-pocket and stepped-feature work. Machinists and toolmakers working with CNC mills and manual knee mills are the primary users of this end mill.

This end mill suits general-purpose and production machining applications in steel, aluminum, stainless, and similar materials. The centercutting geometry allows plunge cutting in addition to peripheral and slot milling. The micrograin carbide substrate provides rigidity and wear resistance needed for tight-tolerance work. Extended reach makes it suitable for pocketing operations where standard-reach tooling cannot access the workpiece geometry.

Key Features

• AlTiN finish for high-temperature resistance and extended tool life
• 40-degree helix angle promotes smooth cutting action and efficient chip flow
• Centercutting design enables direct plunge entry without pre-drilling
• Micrograin solid carbide substrate for rigidity and edge retention
• Extended reach of 2-5/8 inches for deep-pocket and stepped-feature machining
• Right-hand cut and right-hand flute spiral geometry for standard CNC and manual mill use

Compatibility

Designed as a general-purpose square end mill compatible with standard 5/16-inch collets, end mill holders, and shrink-fit toolholders used on CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist following safe toolchanging procedures. Ensure the machine spindle is fully stopped and locked out before inserting or removing the end mill. Seat the shank fully into the holder to the recommended gauge length and torque the retention mechanism according to the toolholder manufacturer's specification. Verify runout with a dial indicator before initiating a cut to avoid premature tool wear or workpiece damage.