Osg VGM5-0089 Square End Mill 5/16 in 5 Flute Carbide Exo

Product Description

The OSG VGM5-0089 is a solid carbide square end mill designed for high-performance milling in a wide range of metalworking applications. It features a 5/16-inch cutting diameter, five flutes with a right-hand helical configuration, and a 40-degree helix angle. The EXO coating provides enhanced surface hardness and heat resistance to extend tool life under demanding cutting conditions. The variable index flute spacing reduces harmonic vibration during cutting, improving surface finish and dimensional accuracy. This end mill is centercutting, allowing plunge entry into the workpiece. It is manufactured from micrograin solid carbide for superior rigidity and wear resistance.

The VGM5-0089 is suited for precision milling operations in job shops, tool rooms, and production machining environments. It handles slotting, profiling, and contour milling in ferrous and non-ferrous materials. The straight-cylindrical shank mounts directly into standard end mill holders, collet chucks, and shrink-fit toolholders with a 5/16-inch bore. The regular-length configuration makes it a practical choice for general-purpose work where extended reach is not required.

Key Features

• 5-flute design increases feed rates and improves surface finish compared to standard 4-flute geometry
• Variable index spacing reduces vibration and chatter during aggressive cuts
• EXO finish coating adds wear resistance and reduces heat buildup at the cutting edge
• 40-degree helix angle promotes efficient chip evacuation and smooth cutting action
• Centercutting geometry allows direct plunge milling without a pre-drilled entry hole
• Micrograin solid carbide construction maintains edge integrity at higher cutting speeds

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide end mill in the OSG VGM5 series, compatible with standard 5/16-inch bore end mill holders, collet chucks, and shrink-fit toolholders.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Secure the shank fully within the toolholder to the recommended gauge-line depth before torquing the retention mechanism. Inspect the cutting edges for chips or damage before mounting. Always confirm spindle speed, feed rate, and depth of cut against the material being machined and the machine tool's rated capacity before initiating a cut.