Accupro 12178980 Square End Mill 3/8 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 12178980 is a 4-flute solid carbide square end mill designed for precision milling in demanding machining applications. Built from micrograin solid carbide, it delivers the rigidity and edge retention required for high-feed roughing and finishing passes. The nACRo physical vapor deposition coating provides enhanced hardness and oxidation resistance at elevated cutting temperatures. With a 40-degree helix angle and spiral flute geometry, the tool promotes efficient chip evacuation and reduces cutting forces. Centercutting capability allows direct plunge entry into workpiece material. This end mill is suited for machinists, tool-and-die makers, and CNC operators working in production and job shop environments.

This end mill is intended for use in vertical and horizontal CNC machining centers and manual knee mills where tight tolerances and consistent surface finish are required. The 3/8 inch diameter and 7/8 inch length of cut make it well-suited for slotting, profiling, and pocket milling in ferrous and non-ferrous metals. The right-hand cut and right-hand flute configuration is the standard orientation for conventional and climb milling setups. The regular-length profile keeps deflection low in short-reach applications.

Key Features

• Micrograin solid carbide construction for superior hardness and wear resistance
• nACRo coating for extended tool life in high-temperature cutting conditions
• 40-degree helix angle promotes smooth cutting action and efficient chip flow
• Centercutting design allows direct plunge milling without a pre-drilled pilot hole
• Right-hand cut and right-hand flute configuration for standard CNC and manual mill setups
• Mill diameter tolerance of +0.000 / -0.002 inches for precise fit in close-tolerance work

Compatibility

Designed as an OEM-style replacement or direct-application solid carbide square end mill for use in standard 3/8 inch collets and end mill holders on CNC machining centers and manual mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Secure the shank fully into a compatible collet or end mill holder to the manufacturer-recommended engagement depth before tightening. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Inspect the cutting edges and coating for damage before each use, and follow applicable shop safety procedures for rotating cutting tools.