Osg 17520611 Extra Length Cobalt Drill Bit 0.2188 in

Product Description

The OSG 17520611 is a cobalt extra-length drill bit designed for drilling tough materials where extended reach and heat resistance are required. It features a 0.2188-inch (7/32 inch) diameter, a 120-degree drill point angle, and a WXL coating finish that improves wear resistance and tool life. The spiral flute design with a fast spiral type promotes efficient chip evacuation, while the R-thinned web reduces thrust and improves penetration in harder workpieces. This bit is suited for machinists, tool-and-die professionals, and metalworking tradespeople who need reliable performance in high-demand applications.

The OSG 17520611 is used in production and maintenance machining environments where standard-length bits lack the reach needed to complete the operation. The extra-length body makes it well suited for drilling deep holes in steel, stainless, cast iron, and other ferrous materials. It is compatible with standard drill chucks and CNC machining centers that accept a straight cylindrical shank. The Series 1750 designation places it within OSG's high-performance cobalt drill lineup aimed at industrial and precision metalworking applications.

Key Features

• Cobalt (M6K grade) construction provides heat and wear resistance when drilling hard metals
• WXL coating finish extends tool life and reduces friction at the cutting edge
• 120-degree standard point angle suitable for flat-bottomed entry on ferrous materials
• Fast spiral flute type promotes efficient chip evacuation in deep-hole drilling
• R-thinned web reduces cutting thrust and improves bit penetration
• Straight cylindrical shank compatible with standard chucks and CNC tool holders

Compatibility

Designed as an OEM-style extra-length drill bit for use in standard drill chucks and CNC machining centers that accept a straight cylindrical shank in the 7/32-inch diameter class.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or metalworking tradespeople. Secure the shank fully in the drill chuck or tool holder and verify runout before operation. Ensure cutting speed and feed rate are appropriate for the workpiece material and bit diameter to avoid overheating or premature wear. Never force a drill bit into a cut beyond its designed flute length capacity.