Osg 496-250211 Corner Radius End Mill 1/4 in 4 Flute

Product Description

The OSG 496-250211 is a solid carbide corner radius end mill designed for high-performance milling in demanding metalworking applications. It features a 1/4 inch cutting diameter with a 0.02 inch corner radius, reducing stress concentrations at the workpiece edge and extending tool life in interrupted cuts. The 4-flute, right-hand spiral geometry with a medium helix angle supports both roughing and finishing operations in a single tool. A TiAlN physical vapor deposition (PVD) coating provides heat and oxidation resistance, making it well-suited for dry or semi-dry machining. This end mill is installed by machinists and tooling technicians on CNC machining centers and manual mills.

This end mill is suited for use on steel, stainless steel, cast iron, non-ferrous metals, and hard materials. The centercutting design allows plunge entry without a pre-drilled hole, adding versatility in slot milling, profiling, and pocket milling operations. The Series 496 regular-length configuration is appropriate for standard-reach applications in both job shop and production environments where a compact 3/4 inch length of cut is sufficient.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and hard materials
• TiAlN PVD coating for elevated heat resistance in high-speed and dry cutting conditions
• 0.02 inch corner radius reduces edge chipping and improves surface finish at workpiece corners
• Centercutting capability allows direct plunge entry into the workpiece
• Right-hand cut, right-hand flute spiral with normal pitch for balanced chip evacuation
• Single-end design with straight cylindrical shank for direct toolholder mounting

Compatibility

Designed for use with standard straight-bore toolholders accepting a 1/4 inch shank diameter. Compatible workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, and hard materials per material codes P, M, K, N, and H.

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer torque and runout specifications. Ensure the machine spindle is fully stopped and the control is in a safe state before changing tooling. Confirm shank engagement depth meets the toolholder minimum grip requirement before operation. Verify spindle speed and feed rate parameters are appropriate for the workpiece material and cutting diameter before starting the cut.