Osg 403-2500 Square End Mill 1/4 Inch 3 Flute Solid Carbide

Product Description

The OSG 403-2500 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. It features a 1/4 inch cutting diameter, a 3/4 inch length of cut, and a 2-1/2 inch overall length. Built from micrograin solid carbide, this tool delivers the rigidity and edge retention needed for consistent performance in ferrous and non-ferrous materials. The 30-degree helix angle promotes smooth chip evacuation and reduces cutting forces. Three flutes provide a balance between chip clearance and surface finish quality. This is a centercutting tool, allowing it to plunge directly into workpiece material.

This end mill is suited for general-purpose milling tasks including slotting, profiling, and plunge cutting on CNC machining centers and manual mills. The 1/4 inch shank diameter fits standard collets and tool holders common to both light-duty and production machining setups. The uncoated finish makes it a reliable choice for applications where coating is not required or where re-sharpening is planned. It is appropriate for use in job shops, toolrooms, and production environments where dimensional accuracy is critical.

Key Features

• Micrograin solid carbide construction for superior hardness and wear resistance
• 30-degree helix angle promotes efficient chip evacuation and reduced cutting pressure
• Centercutting design allows direct plunge entry into material
• Right-hand cut and right-hand spiral flute configuration
• Three-flute geometry balances chip clearance with surface finish
• Regular length profile for stable overhang in standard milling operations

Compatibility

Designed as a standard 1/4 inch shank square end mill compatible with collet chucks, end mill holders, and shrink-fit tool holders accepting 1/4 inch shank tooling on CNC and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before changing tooling. Use a properly sized collet or tool holder and tighten to the tool holder manufacturer's specified clamping procedure. Verify runout with a dial indicator after setup to confirm accurate seating before beginning a cut.