Osg 461-2500 Square End Mill 0.25in 6 Flute Solid Carbide

Product Description

The OSG 461-2500 is a 6-flute solid carbide square end mill designed for high-performance milling in demanding machining environments. With a 0.25-inch cutting diameter, a 0.75-inch length of cut, and a 30-degree helix angle, this tool delivers efficient chip evacuation and smooth cutting action on a wide range of workpiece materials. The micrograin carbide substrate provides the hardness and wear resistance needed for production milling operations. It is a single-end, right-hand cut tool with a right-hand spiral flute configuration and a bright, uncoated finish. Machinists and tool and die professionals select this end mill for general-purpose profiling, slotting, and peripheral milling applications.

The OSG 461-2500 belongs to OSG Series 461, a line of solid carbide square end mills built for regular-length cutting applications. The 0.25-inch shank diameter matches the cutting diameter, making it compatible with standard collet chucks and end mill holders sized for quarter-inch tooling. The centercutting design allows plunge entry into the workpiece when the operation requires it. This tool is suited for use on CNC machining centers and manual mills where a rigid setup and appropriate cutting parameters are maintained.

Key Features

• Solid micrograin carbide construction for hardness and extended tool life
• 6-flute design increases feed rates and improves surface finish compared to lower flute-count alternatives
• 30-degree helix angle promotes efficient chip flow and reduces cutting forces
• Centercutting capability allows direct plunge milling without a pre-drilled entry point
• Right-hand cut and right-hand spiral flute for standard spindle rotation
• Bright, uncoated finish suitable for use with or without cutting fluid

Compatibility

Designed as an OEM-style solid carbide square end mill for use with standard 0.25-inch collet chucks and end mill holders on CNC machining centers and manual milling machines. Part of the OSG Series 461 regular-length end mill family.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle at a full stop and the machine in a locked-out, de-energized state. Seat the 0.25-inch shank fully and evenly in the collet or tool holder and torque the retention mechanism to the tool holder specification before running. Inspect the cutting edges for chips or damage before each use, and verify runout with a dial indicator when tight tolerances are required. Follow the tool manufacturer and machine builder recommendations for speeds, feeds, and depth of cut appropriate to the workpiece material.