Osg 17502411 Extra Length Cobalt Drill Bit 0.078 in

Product Description

The OSG 17502411 is a cobalt extra-length twist drill bit designed for drilling in tough, abrasion-resistant materials where standard-length bits fall short. The 0.078-inch diameter bit features a 120-degree split point with OSG proprietary R-Thinning on the web, which reduces thrust force at entry and improves centering without a center punch. A WXL finish coating extends tool life in demanding ferrous applications. The straight-cylindrical shank seats in standard drill chucks without adapters. With a 15xD flute-to-diameter ratio, this bit reaches deep-hole applications that standard jobber-length drills cannot access.

This bit is suited for machinists, tool-and-die professionals, and maintenance technicians working in metal fabrication, aerospace, automotive, and general manufacturing environments. The extra flute length makes it appropriate for through-holes in thick stock, stacked plate, or fixtures where reach is a constraint. A right-hand spiral and two-flute configuration provide efficient chip evacuation in most metals including alloy steels, stainless, and cast iron.

Key Features

• Cobalt tool material for high-heat and abrasion-resistant drilling in hard metals
• WXL finish coating for extended tool life in ferrous materials
• 120-degree drill point angle for general-purpose metal entry
• Proprietary R-Thinned web reduces thrust at entry and aids self-centering
• 15xD flute length enables deep-reach applications beyond jobber-length capability
• Spiral flute with right-hand cutting direction for standard drill press and CNC use

Compatibility

Designed as a general-purpose extra-length cobalt drill bit compatible with standard straight-shank drill chucks on drill presses, CNC machining centers, and handheld power drills.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with cutting tool selection and speeds and feeds for cobalt tooling. Secure the straight-cylindrical shank fully in the chuck before operation and verify runout before drilling. Power down and lock out the machine before changing or inspecting the bit. Do not exceed the recommended speeds and feeds for the workpiece material, as cobalt bits are sensitive to overheating without coolant.