Osg VGM5-0249 Square End Mill 1 in 5 Flute Carbide Exo

Product Description

The OSG VGM5-0249 is a solid carbide square end mill engineered for high-performance milling in demanding machining environments. Built on the VGM5 platform, this single-end tool features 5 helical flutes with a 40-degree helix angle and a variable index design that reduces chatter and improves surface finish at higher feed rates. The micrograin carbide substrate provides excellent hardness and wear resistance, while the proprietary EXO coating adds thermal protection and lubricity for extended tool life in ferrous and non-ferrous materials. Machinists and CNC programmers in job shops and production facilities rely on this geometry for finish milling, slotting, and profiling operations.

This end mill is suited for use in vertical machining centers and horizontal mills running steel, stainless steel, aluminum, and similar workpiece materials. The stub-length configuration keeps the tool rigid and minimizes deflection, making it well-suited for side-wall milling and shoulder passes where dimensional accuracy is critical. The straight cylindrical shank allows secure clamping in standard ER collets, hydraulic chucks, and shrink-fit toolholders with a 1-inch bore.

Key Features

• 5 helical flutes with variable index for reduced harmonic vibration and improved chip evacuation
• 40-degree helix angle optimized for aggressive material removal and smooth finish
• Micrograin solid carbide substrate for superior hardness and edge retention
• EXO coating provides thermal resistance and reduced built-up edge
• Center-cutting capability allows plunge entry and ramping operations
• Right-hand cut, right-hand flute direction for standard spindle compatibility

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for CNC machining centers accepting a 1-inch straight cylindrical shank end mill with a 1-inch bore toolholder.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the toolholder is clean and free of chips or coolant residue before seating the shank. Verify runout with a dial indicator after clamping to confirm proper seating in the collet or chuck. Follow the tool manufacturer and machine builder guidelines for recommended speeds and feeds based on workpiece material.