Osg 424-031211 Square End Mill 4 Flute Solid Carbide Tialn

Product Description

The OSG 424-031211 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. This stub-length, single-end tool features a 0.0313-inch mill diameter with four flutes and a 30-degree right-hand helix for efficient chip evacuation. The TiAlN (titanium aluminum nitride) coating provides thermal resistance and extended tool life in high-speed dry or semi-dry cutting applications. At 1.5 inches overall length with a 0.125-inch straight cylindrical shank, this end mill suits close-tolerance work in tight setups where rigidity and runout control are critical. Micrograin carbide construction supports fine edge retention at elevated cutting speeds.

This end mill is suited for CNC machining centers, manual mills, and high-speed spindle applications where a small-diameter finishing or slotting tool is required. The stub length and 5/64-inch length of cut make it appropriate for shallow slot milling, profiling, and engraving operations in tool steel, stainless, aluminum, and similar workpiece materials. It is a direct fit for applications within the OSG 424 series tool family and is typically selected by machinists, tool-and-die technicians, and CNC programmers working with micro-detail features.

Key Features

• 0.0313-inch mill diameter with center-cutting geometry for plunge entry
• Four-flute spiral flute design with 30-degree right-hand helix for smooth chip flow
• TiAlN coating for heat resistance and extended tool life in dry cutting
• Micrograin solid carbide substrate for fine edge retention and dimensional stability
• Stub length (5/64-inch length of cut) maximizes rigidity and minimizes deflection
• Straight cylindrical shank with shank diameter tolerance of +0.0000 to -0.0020 inches for consistent toolholder fit

Compatibility

Designed as an OEM-style replacement and standard production tool within the OSG 424 series. Compatible with standard ER collet chucks, shrink-fit holders, and precision toolholders accepting a 0.125-inch straight shank.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the toolholder bore and collet are clean and free of debris before seating the shank; contamination causes runout and premature tool failure. Confirm spindle speed and feed rate are set per the material and coating manufacturer recommendations before engaging the cut. Do not exceed the rated length of cut when plunge milling, as stub-length tools are not intended for deep-cavity work beyond their flute length.