Accupro 12178984 Square End Mill 7/16 Inch 4 Flute Carbide

Product Description

The ACCUPRO 12178984 is a solid carbide square end mill designed for precision milling in metal, alloy, and composite materials. It features a 7/16-inch cutting diameter, a 1-inch length of cut (LOC), and four spiral flutes with a 40-degree helix angle. The nACRo finish provides enhanced wear resistance and heat dissipation at elevated cutting speeds. Built from micrograin carbide stock, this tool maintains edge integrity through demanding roughing and finishing passes. It is a center-cutting design, allowing direct plunge entry into workpieces. Right-hand cut and right-hand flute orientation match standard CNC and manual milling machine spindles.

This end mill is suited for general-purpose milling operations in job shops, tool rooms, and production environments. Typical applications include slot milling, peripheral milling, and step cutting in ferrous and non-ferrous metals. The regular-length body and 7/16-inch shank fit standard ER collet chucks, end mill holders, and side-lock holders commonly found on vertical machining centers and knee mills. The 40-degree helix promotes smooth chip evacuation, reducing built-up edge in stainless, alloy steel, and hardened materials.

Key Features

• Solid micrograin carbide construction for extended tool life and edge sharpness
• nACRo coating improves heat and wear resistance in high-speed milling
• 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces
• Center-cutting geometry allows direct plunge milling without pre-drilling
• Right-hand cut and right-hand flute orientation for standard spindle compatibility
• Tight mill diameter tolerance of +0.000 / -0.002 inches for consistent fit and finish

Compatibility

Designed for use in standard 7/16-inch ER collet chucks, end mill holders, and side-lock tool holders on CNC vertical machining centers and manual knee mills with right-hand spindle rotation.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank to the full recommended gauge depth in the holder and torque the retention mechanism per the holder manufacturer specification. Verify runout at the tool tip after installation before initiating a cut.