Accupro 12179338 Corner Radius End Mill 3/8 in 3 Flute

Product Description

The ACCUPRO 12179338 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous metals. It features a 3/8 inch diameter, a 0.015 inch corner radius, and three right-hand spiral flutes for efficient chip evacuation and smooth surface finishes. The AlTiN coating provides high-temperature resistance and extended tool life in demanding cutting environments. With a 7/8 inch length of cut and a 2-1/2 inch overall length, this single-end centercutting tool is suited to slotting, profiling, and contouring where corner geometry must be held to tight tolerances.

This end mill is used in CNC machining centers and manual mills for general-purpose and finishing passes on steel, stainless steel, cast iron, and high-temperature alloys. The centercutting geometry allows plunge entry, making it practical for pocketing operations. It is a standard choice for machinists, tool-and-die shops, and production floor setups where controlled corner radii are required on finished part features.

Key Features

• 0.015 inch corner radius with a tolerance of plus or minus 0.0015 inches for accurate edge geometry
• AlTiN coating for high-heat resistance and extended tool life in hard materials
• Three right-hand spiral flutes with centercutting capability for plunge entry
• Micrograin solid carbide substrate for rigidity and edge retention
• 3/8 inch shank diameter with a shank tolerance of -0.0001 to -0.0004 inches for precise tool holder fit
• 40-degree helix angle promotes smooth cutting action and efficient chip removal

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC machining centers and milling machines accepting a 3/8 inch straight shank end mill.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Secure the shank fully in a collet or end mill holder to the recommended engagement depth before tightening. Confirm runout with a dial indicator before beginning a cut. Always shut down the spindle and confirm zero RPM before changing or inspecting tooling.