Accupro 12180439 Square End Mill 3/8 in 4 Flute Carbide

Product Description

The ACCUPRO 12180439 is a solid carbide square end mill designed for precision milling operations in ferrous and non-ferrous materials. It features a 3/8 inch cutting diameter, a 7/8 inch length of cut, and a 4-flute spiral geometry with a 40-degree helix angle. The AlTiN coating provides thermal resistance and extended tool life in high-speed dry or semi-dry cutting applications. Variable index spacing reduces harmonic chatter, making this end mill well-suited for finishing passes and contour work. Machinists and CNC operators in job shops, tool rooms, and production environments are the primary users of this type of tooling.

This end mill is used in vertical and horizontal CNC machining centers and manual knee mills for slotting, profiling, and pocketing operations. The 3/8 inch shank diameter fits standard ER and straight-bore collet systems. With a 2.5 inch overall length and a center-cutting design, it can plunge directly into material when required. The right-hand cut and right-hand flute configuration is the standard orientation for conventional and climb milling on most machines.

Key Features

• Solid carbide micrograin substrate for rigidity and wear resistance
• AlTiN coating for high-temperature performance in hard and abrasive materials
• 40-degree helix angle with variable index to reduce chatter
• Center-cutting capable — allows direct plunge entry
• Right-hand cut, right-hand flute — standard spindle orientation
• Spiral flute geometry promotes efficient chip evacuation

Compatibility

Designed as a standard 3/8 inch shank square end mill compatible with ER collet chucks, shrink-fit holders, and straight-bore toolholders sized for 3/8 inch shank tooling on CNC machining centers and manual milling machines.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down the spindle and confirm zero-energy state before loading or unloading tooling. Seat the shank fully in the collet or toolholder to the recommended gauge length and torque the retention hardware per the toolholder manufacturer specifications. Inspect the cutting edges and coating for chips or wear before each use.