Accupro 12183413 Square End Mill 3/8 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 12183413 is a solid carbide square end mill engineered for high-performance milling in demanding shop environments. It features a 3/8-inch cutting diameter, four flutes, and a 40-degree helix angle with an AlTiN (aluminum titanium nitride) coating that extends tool life in dry or semi-dry cutting of hardened steels, stainless, and cast iron. The 1-3/8-inch length of cut and 3-inch overall length make it suitable for deeper pocketing and profiling operations. Manufactured from micrograin carbide stock, this end mill delivers consistent dimensional accuracy within a mill diameter tolerance of +0.000/-0.002 inches. It is centercutting, allowing direct plunge entry into the workpiece. CNC machinists and tool-and-die professionals are the primary users.

This end mill is applied in general-purpose milling, profiling, slotting, and contouring on vertical and horizontal machining centers. The extra-long length-of-cut classification suits applications where standard-reach tooling cannot achieve sufficient depth. Right-hand cut and right-hand flute direction make it compatible with conventional CNC spindle configurations. It is appropriate for production and job-shop environments where tool consistency and surface finish in ferrous and non-ferrous materials are critical process requirements.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance
• AlTiN coating for extended tool life in high-temperature cutting of hardened and ferrous materials
• 40-degree helix angle promotes smooth chip evacuation and reduced cutting forces
• Centercutting design allows direct plunge milling without a pilot hole
• Extra-long length of cut (1-3/8 inches) enables deeper pocket and profile operations
• Tight shank diameter tolerance (-0.0001/-0.0004 inches) ensures secure, accurate tool holding

Compatibility

Designed for use in standard 3/8-inch collet chucks, end mill holders, and shrink-fit toolholders on CNC vertical and horizontal machining centers configured for right-hand cutting.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician. Ensure the spindle is fully stopped and the machine is in an e-stop or locked-out state before changing tooling. Seat the 3/8-inch shank fully into the toolholder and torque the retention mechanism per the toolholder manufacturer's specifications. Confirm runout with a dial indicator before beginning the first cut to verify proper seating and avoid premature tool wear or workpiece damage.