Osg 17508111 Extra Length Cobalt Drill Bit 0.2344 in

Product Description

The OSG 17508111 is an extra length cobalt drill bit designed for demanding metal drilling applications where standard-length bits fall short. Built from M6K-grade cobalt steel and finished with OSG WXL coating, it delivers extended tool life in tough materials including alloy steels, stainless steel, and cast iron. The bit features a 120-degree point angle with a standard point type and R-thinned web for reduced thrust at entry. At 0.2344 inches in diameter with a flute length of 4.252 inches (108 mm) and an overall length of 6.693 inches (170 mm), it reaches depths that standard jobber bits cannot. Right-hand cutting spiral flutes with a fast spiral configuration efficiently evacuate chips during deep-hole drilling.

This bit is suited for production machining, toolroom work, and maintenance applications where deep-hole drilling in metal is required. The extra length makes it practical for drilling through thick stock, crossing structural members, or reaching obstructed bore locations on machine components. It is typically used by machinists, tool and die makers, and maintenance technicians operating drill presses, CNC machining centers, or hand-held power drills with appropriate speed and feed control. The straight-cylindrical shank fits standard drill chucks and collet holders sized for 15/64-inch shanks.

Key Features

• M6K cobalt steel construction for high-heat resistance and durability in hard metals
• WXL coating extends cutting life and reduces friction during chip evacuation
• 120-degree point angle with R-thinned web reduces entry thrust and improves centering
• Fast spiral flute geometry promotes efficient chip removal in deep holes
• Extra length overall measurement of 6.693 inches (170 mm) accesses deep or obstructed bore locations
• Straight-cylindrical shank fits standard chucks without adapters

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for applications requiring a 0.2344-inch diameter extra length cobalt drill in OSG Series 1750.

Installation Notes

Installation and use should be performed by qualified machinists or trades personnel familiar with proper speeds, feeds, and chip-clearing practices for cobalt drill bits. Secure the workpiece firmly before drilling and ensure the drill chuck or collet is properly tightened on the straight-cylindrical shank. Use cutting fluid appropriate for the workpiece material to protect both the bit and the part. Do not exceed manufacturer-recommended RPM for the given diameter and material.