Osg 5944300 Tapered End Mill 3 Deg Cobalt Square End

Product Description

The OSG 5944300 is a cobalt tapered end mill designed for precision milling operations that require a controlled taper profile. Built from M42 cobalt high-speed steel, this tool delivers strong heat resistance and edge retention in tough ferrous and non-ferrous materials. It features a 3-degree taper angle per side, a small end diameter of 0.125 inches, and a 1-inch length of cut. The square end geometry makes it suitable for profiling, slotting, and contouring applications in mold, die, and general machining work. It is installed by machinists and tool-and-die professionals on vertical and horizontal milling machines and CNC machining centers.

This tapered end mill fits typical applications in mold-making, die work, and precision profiling where a defined taper wall angle is required. The 3-flute configuration balances chip evacuation with rigidity, making it effective in both roughing and finishing passes on harder materials. The 0.375-inch shank diameter provides stable tool holding in standard collet chucks and end mill holders. The Series 594 designation identifies this as part of a structured OSG product line for tapered cobalt end mills.

Key Features

• M42 cobalt construction for improved heat and wear resistance over standard HSS
• 3-degree taper angle per side for controlled wall draft in mold and die cavities
• 3-flute spiral design with right-hand flute direction for efficient chip removal
• Centercutting capability allows plunge entry without pre-drilling
• 25-degree helix angle balances cutting force and surface finish
• Uncoated finish suitable for use with standard cutting fluids and oils

Compatibility

Designed as a direct-fit tapered end mill for use in standard 0.375-inch end mill holders, collet chucks, and shrink-fit toolholders on vertical mills and CNC machining centers requiring Series 594 OSG tapered cobalt tooling.

Installation Notes

Installation is performed by machinists using appropriate end mill holders or collet systems rated for the 0.375-inch shank diameter. Ensure the spindle is fully powered down and locked out before changing tooling. Verify tool runout with a dial indicator after installation to confirm proper seating. Follow the machine tool manufacturer guidelines and applicable shop safety standards when operating at the recommended speeds and feeds for cobalt end mills.