Accupro 12178796 Square End Mill 25/64 in 2 Flute Carbide

Product Description

The ACCUPRO 12178796 is a solid carbide square end mill designed for precision milling operations in metal and hard material applications. It features a 25/64-inch (0.3906-inch) cutting diameter with a 5/8-inch length of cut and a 7/16-inch shank diameter. The 2-flute spiral geometry runs with a 40-degree helix angle and is finished with an nACRo coating, which improves wear resistance and heat dissipation at the cutting edge. Overall length is 2 inches. This tool is center-cutting capable and cuts in a right-hand direction with right-hand flute orientation. It is sold as a single-piece unit and intended for use in CNC machining centers and manual mills.

This end mill is suited for slotting, profiling, and plunge-cutting operations on ferrous and non-ferrous materials. The micrograin carbide substrate and nACRo finish make it appropriate for hardened steels, stainless alloys, and cast iron where tool life and surface finish are critical. Machinists and toolroom operators working on tight-tolerance components will find the close diameter tolerance of +0.000/-0.002 inches suitable for finish passes and precision pockets. The 40-degree helix promotes efficient chip evacuation at higher feed rates.

Key Features

• 25/64-inch cutting diameter with a tolerance of +0.000/-0.002 inches
• nACRo finish for improved wear resistance in ferrous and hardened material applications
• 40-degree helix spiral flute for aggressive chip evacuation
• Center-cutting design allows direct plunge entry without a pre-drilled pilot hole
• Micrograin solid carbide substrate for extended tool life and rigidity
• Right-hand cut, right-hand flute configuration — standard mill spindle compatible

Compatibility

Designed as an OEM-style replacement or standard tooling selection for CNC machining centers and manual mills accepting a 7/16-inch straight shank with a 2-inch overall length.

Installation Notes

This end mill is installed by a machinist or toolroom technician into a compatible collet, end mill holder, or milling chuck rated for a 7/16-inch shank. Confirm the holder is clean and free of chips before seating the tool. Always bring the spindle to a full stop before changing tooling. Follow shop-specific feeds-and-speeds parameters for the material being cut; do not exceed the holder or spindle rated RPM.