Accupro 12178891 Square End Mill 13/32 in 3 Flute Carbide

Product Description

The ACCUPRO 12178891 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. It features a 13/32 inch (0.4062 inch) cutting diameter, a 1 inch length of cut, and a 7/16 inch shank diameter, with an overall length of 2-3/4 inches. The three-flute geometry with a 40-degree helix angle and spiral flute design promotes efficient chip evacuation and smooth cutting action. The nACRo finish provides enhanced wear resistance and thermal stability, extending tool life in demanding cutting conditions. This end mill is centercutting, enabling direct plunge entry into workpiece material. Intended for use by machinists and CNC operators in production and job shop environments.

This end mill suits general-purpose milling operations including slotting, profiling, and peripheral milling on ferrous and non-ferrous metals. The right-hand cut and right-hand flute configuration is standard for conventional CNC machining center setups. The micrograin carbide substrate supports tight tolerances and consistent performance across production runs. The 13/32 inch diameter fits applications where a near-half-inch cutter is required without stepping up to a full 1/2 inch shank tool.

Key Features

• 13/32 inch (0.4062 inch) cutting diameter with a mill diameter tolerance of +0.000/-0.002 inches
• Solid carbide micrograin substrate for rigidity and edge retention
• nACRo coating for improved wear resistance and heat resistance
• 40-degree helix angle with spiral flute design for efficient chip removal
• Centercutting design allows direct plunge milling
• Right-hand cut, right-hand flute — compatible with standard CNC spindle rotation

Compatibility

Designed as a standard shank solid carbide square end mill for use in CNC machining centers and manual mills equipped with collet or end mill holders accepting a 7/16 inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool. Seat the shank fully into the collet or tool holder to the recommended engagement depth and torque the retention mechanism per the tool holder manufacturer specifications. Verify runout with a dial indicator before beginning the cut to protect both the tool and the workpiece.