Osg 404-062508 Square End Mill 1/16 Inch 4 Flute Ticn

Product Description

The OSG 404-062508 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. Built on OSG Series 404, it features a micrograin carbide substrate and a TiCN (titanium carbonitride) coating that improves wear resistance and surface hardness compared to uncoated tools. The cutting diameter is 0.0625 inches with a 0.1875-inch length of cut, a 0.125-inch shank diameter, and a 1.5-inch overall length. Four right-hand spiral flutes at a 30-degree helix angle provide efficient chip evacuation and smooth surface finish. The centercutting geometry allows plunge entry, adding versatility in slotting and profile milling operations.

This end mill is suited for close-tolerance work in die and mold shops, prototype machining, and precision component manufacturing. Its small diameter makes it appropriate for fine-detail profiling, narrow slot cutting, and intricate cavity work on CNC machining centers and high-speed spindles. The regular length designation keeps deflection low at this diameter, which is critical when holding tight tolerances in hardened or abrasive workpiece materials. Machinists working with aluminum, steel, stainless, and similar materials will find the TiCN finish beneficial for extending tool life in moderate- to high-speed cutting conditions.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention at small diameters
• TiCN coating improves wear resistance and reduces built-up edge in ferrous materials
• 4-flute, right-hand spiral design with 30-degree helix for efficient chip evacuation
• Centercutting geometry permits direct plunge entry without pre-drilling
• Mill diameter tolerance of +0.000 / -0.001 inches for consistent dimensional accuracy
• Shank diameter tolerance of +0.00000 / -0.0005 inches for secure collet grip

Compatibility

Designed as an OEM-style cutting tool for use in CNC machining centers, knee mills, and high-speed spindle setups accepting a 0.125-inch straight shank. Part of the OSG Series 404 end mill family.

Installation Notes

Installation is performed by qualified machinists or CNC operators. The machine spindle must be at a full stop and locked out before mounting or removing the tool from the collet or end mill holder. Verify collet size matches the 0.125-inch shank diameter and that runout is within acceptable limits before cutting, as excessive runout accelerates tool wear at this diameter. Follow the machine manufacturer and OSG Series 404 cutting data recommendations for speeds, feeds, and depth of cut.