Osg 84400823 Square End Mill 1/4 in 6 Flute Solid Carbide

Product Description

The OSG 84400823 is a solid carbide square end mill designed for high-performance milling in demanding machining applications. With a 0.25-inch cutting diameter, a 5/8-inch length of cut, and six flutes ground to a 43-degree helix angle, this tool delivers efficient chip evacuation and a smooth surface finish in a wide range of workpiece materials. The DUROREY finish adds wear resistance, extending tool life in production environments. It is centercutting, allowing plunge entry directly into the workpiece. Machinists, tool-and-die makers, and CNC operators working in job shops or production facilities will find this end mill well-suited to both roughing and finishing passes.

This end mill is used in vertical machining centers, CNC mills, and manual knee mills where a 1/4-inch shank and compact geometry are required. At 2-1/2 inches overall length with a 1/4-inch shank diameter, it fits standard ER collet chucks and end mill holders in that size range. The right-hand cut and right-hand flute configuration is the industry-standard orientation for conventional CNC milling setups. Applications include slotting, profiling, and peripheral milling in ferrous and non-ferrous metals, plastics, and composites.

Key Features

• 6-flute geometry increases feed rates and improves finish compared to 2- or 4-flute designs in finishing operations
• 43-degree helix angle promotes efficient chip flow and reduces cutting forces
• Centercutting design allows direct plunge milling without a pre-drilled entry point
• DUROREY finish provides enhanced surface hardness and wear resistance for longer tool life
• Solid carbide construction maintains rigidity and edge sharpness at elevated cutting speeds
• Right-hand cut, right-hand flute configuration suits standard CNC mill spindle rotation

Compatibility

Designed for use in any CNC or manual milling machine accepting a 1/4-inch shank end mill holder or ER collet chuck of the corresponding bore size.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully powered down and locked out before inserting or removing tooling. Seat the shank fully into the collet or end mill holder to the recommended minimum engagement depth and torque the retention nut or set screw per the tool holder manufacturer's specification. Inspect the cutting edges for chips or damage before each use.