Osg 8623280 Extra Length Cobalt Drill Bit 0.315 in

Product Description

The OSG 8623280 is an extra-length cobalt drill bit engineered for demanding metal cutting applications where standard-length bits fall short. Built from M6K cobalt high-speed steel and finished with OSG WXL coating, this bit delivers extended tool life in hard and abrasive materials. The 0.315-inch (8.00 mm) diameter and 10.04-inch (255 mm) overall length make it the right choice for deep-hole drilling operations in aerospace, die and mold, and general machining environments. The 120-degree standard point with R-thinned web reduces entry force and improves chip evacuation. A fast spiral flute and right-hand cutting direction round out the performance profile.

This bit is suited for production and maintenance machining operations requiring reach beyond what a jobber-length drill can provide. The straight-cylindrical shank seats directly in standard drill chucks and collet holders without adapters. Series 1750 is positioned as a high-performance option for cutting steel, stainless steel, cast iron, and other ferrous materials where cobalt grade tooling is specified. It is used by machinists, tool-and-die makers, and maintenance mechanics working on manual lathes, drill presses, and CNC machining centers.

Key Features

• M6K cobalt steel construction for heat resistance and edge retention in ferrous materials
• WXL finish reduces friction and extends tool life in high-cycle applications
• 120-degree standard point with R-thinned web for reduced entry force and cleaner starts
• Fast spiral flute promotes efficient chip evacuation in deep-hole drilling
• Tapered web configuration adds core strength along the full flute length
• Straight-cylindrical shank fits standard drill chucks and collet holders without modification

Compatibility

Designed as an OEM-style extra-length drill bit for use in standard drill chucks and collet systems accepting a 0.315-inch straight-cylindrical shank.

Installation Notes

Installation is performed by qualified machinists or maintenance mechanics. Secure the shank fully in the chuck or collet and verify runout before drilling. Power down and lock out the machine before changing tooling. Do not exceed the recommended feed and speed parameters for the workpiece material and bit diameter.