Osg 424-2500 Square End Mill 0.25 in 4 Flute Solid Carbide

Product Description

The OSG 424-2500 is a solid carbide square end mill designed for precision milling operations across a wide range of materials. Built from micrograin carbide, this 4-flute tool offers a 0.25-inch cutting diameter with a 0.5-inch length of cut and a 2.5-inch overall length. The 30-degree helix angle and spiral flute geometry promote efficient chip evacuation and smooth cutting action. The centercutting design allows plunge entry as well as lateral milling passes. This tool is intended for installation and use by machinists and CNC operators working in job shops, production facilities, and maintenance environments.

The OSG 424-2500 is suited for slotting, profiling, pocketing, and plunging operations in ferrous and non-ferrous materials. Its stub length classification makes it well-suited for applications where rigidity and minimal deflection are priorities over extended reach. The right-hand cut and right-hand flute configuration is standard for conventional and climb milling on vertical and horizontal machining centers as well as manual mills. The uncoated finish is appropriate for applications where a base carbide substrate is preferred or where post-coating is applied by the end user.

Key Features

• 0.25-inch cutting diameter with 0.5-inch length of cut for precise material removal
• Micrograin solid carbide construction for extended tool life and edge retention
• 4-flute spiral design with 30-degree helix angle for efficient chip evacuation
• Centercutting geometry allows direct plunge entry without pre-drilling
• Right-hand cut, right-hand flute — standard configuration for most CNC and manual mill setups
• Stub length classification maximizes rigidity and reduces deflection in tight setups

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide square end mill for standard 0.25-inch collet and toolholder systems used on CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator following standard toolholding procedures. Ensure the spindle is fully powered down and the machine is in a safe state before inserting or removing the end mill. Use a properly sized collet or end mill holder rated for 0.25-inch shanks and torque to the toolholder specification. Verify runout after installation before beginning a cut.