Accupro 12181716 Square End Mill 3/16 in 2 Flute Carbide

Product Description

The ACCUPRO 12181716 is a single-end square end mill designed for precision milling in metal and composite materials. Built from micrograin solid carbide, it delivers the rigidity and edge retention needed for demanding cutting applications. The tool features a 3/16 inch mill diameter, a 3/4 inch length of cut, and a 40-degree helix angle that promotes efficient chip evacuation and smooth cutting action. The bright uncoated finish makes it suitable for a wide range of general-purpose milling operations where coating interaction with workpiece material is a concern. Machinists and tool-and-die professionals use this end mill in CNC machining centers and manual milling machines alike.

This end mill fits typical light-duty to medium-duty milling applications where a small-diameter, long-series tool is required. The 3/16 inch shank diameter matches the mill diameter for straightforward collet setup. The 2-1/2 inch overall length and long-series designation make it well suited for reaching into pockets, slots, and cavities that standard-length tools cannot access. It is centercutting, allowing plunge entry directly into the workpiece without a pre-drilled pilot hole. Right-hand cut and right-hand spiral flute geometry follow standard CNC milling conventions.

Key Features

• Micrograin solid carbide construction for superior hardness and edge life
• 40-degree helix angle promotes aggressive chip evacuation and reduces heat buildup
• Centercutting geometry allows direct plunge milling without pilot drilling
• Long-series length provides extended reach into deep pockets and slots
• Bright uncoated finish compatible with a broad range of workpiece materials
• Right-hand cut, right-hand flute spiral for standard CNC spindle compatibility

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide square end mill for CNC machining centers, vertical mills, and manual milling machines accepting 3/16 inch shank collets or tool holders.

Installation Notes

Installation is performed by a machinist or tooling technician using an appropriate collet or end mill holder rated for the 3/16 inch shank diameter. Confirm runout on the spindle and holder before engaging the cut, as excessive runout accelerates edge wear on small-diameter carbide tools. Ensure the tool is seated fully and the collet nut is torqued per the tool holder manufacturer specification before operation. Never exceed the tool manufacturer recommended speeds and feeds for the workpiece material and depth of cut.