Accupro 12183705 Square End Mill 3/8 in 4 Flute Altin Carbide

Product Description

The ACCUPRO 12183705 is a solid carbide square end mill designed for high-performance milling in demanding shop environments. Built from micrograin carbide and coated with AlTiN (aluminum titanium nitride), it handles elevated cutting temperatures while maintaining edge hardness in ferrous and non-ferrous materials. The 4-flute spiral configuration with a 40-degree helix angle promotes efficient chip evacuation and smooth surface finishes. With a 3/8 inch cutting diameter, a 1-1/2 inch length of cut, and a 6 inch overall length, this extra-long end mill reaches into deep pockets and slots that standard-length tools cannot access. Centercutting geometry allows direct plunge entry without a pre-drilled hole.

This end mill is suited for CNC machining centers, knee mills, and manual mills running steel, stainless steel, cast iron, and high-temp alloys where an AlTiN coating provides a thermal barrier. The extra-long OAL makes it a practical choice for deep-cavity milling, long-reach profiling, and applications where workpiece fixturing or part geometry demands additional clearance between the spindle and the cut surface. It is installed and run by machinists and CNC operators in job shops, production facilities, and toolrooms.

Key Features

• AlTiN coating provides high heat resistance for dry or near-dry cutting in hard and abrasive materials
• Micrograin solid carbide substrate delivers rigidity and edge retention over standard carbide grades
• 40-degree helix angle promotes chip flow and reduces cutting forces on the workpiece
• Centercutting design allows direct plunge milling without a pilot hole
• Right-hand cut, right-hand flute configuration matches standard spindle rotation on conventional and CNC equipment
• Extra-long 6 inch OAL provides reach for deep-pocket and long-clearance applications

Compatibility

Designed as a direct-fit replacement or standard tooling selection for 3/8 inch collets, end mill holders, and shrink-fit toolholders on CNC machining centers and manual mills.

Installation Notes

Installation is performed by a machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the 3/8 inch shank fully into a matched collet or end mill holder and tighten to the toolholder manufacturer's specified procedure to prevent pullout under load. Inspect the AlTiN coating and cutting edges for chips or wear before each use, as a damaged edge on a long-reach tool can amplify vibration and deflection.