Osg 464-250011 Square End Mill 1/4 in 4 Flute Solid Carbide

Product Description

The OSG 464-250011 is a solid carbide square end mill engineered for precision milling in ferrous and non-ferrous metals. Built on OSG Series 464, it features a TiAlN coating that extends tool life under high-heat cutting conditions. The 4-flute, spiral geometry with a 30-degree helix angle promotes efficient chip evacuation and surface finish quality. At 0.25 inches in diameter with a 1.125-inch length of cut, this end mill handles slotting, profiling, and pocketing operations. Centercutting capability allows plunge entry without a pre-drilled hole. Micrograin carbide substrate provides rigidity and wear resistance in demanding machining environments. Installed by machinists and CNC operators in job shop and production settings.

This end mill is suited for CNC machining centers and manual mills requiring a long-series 1/4-inch tool. The 3-inch overall length and standard 1/4-inch shank fit common collet and end mill holder systems. Right-hand cut and right-hand flute configuration matches conventional spindle rotation on most vertical and horizontal machining setups. It is appropriate for finish and semi-finish passes on steel, stainless, cast iron, and similar materials where TiAlN coatings perform best.

Key Features

• TiAlN finish for elevated heat resistance and extended tool life
• Micrograin solid carbide substrate for rigidity and edge retention
• 30-degree helix spiral flute for efficient chip evacuation
• Centercutting design allows direct plunge entry
• Long-series length of cut (1.125 inches) for deeper slot and pocket work
• Right-hand cut, right-hand flute for standard spindle compatibility

Compatibility

Designed as an OEM-style replacement or direct-use end mill for 1/4-inch collets and end mill holders on standard CNC and manual milling machines requiring a long-series 4-flute square end mill.

Installation Notes

Installation is performed by qualified machinists or CNC operators. Power down and lock out the spindle before inserting or removing the tool from its holder. Ensure the collet or end mill holder is clean and properly torqued to manufacturer specifications before operation. Inspect the cutting edges for chips or wear before each use, and confirm runout is within acceptable tolerance for the intended application.