Osg 17521011 Cobalt Extra Length Drill Bit 0.2344 in

Product Description

The OSG 17521011 is a cobalt extra length drill bit designed for high-performance drilling in tough materials. Built from M6K-grade cobalt steel with a WXL coating, it handles demanding production and maintenance applications where standard-length bits fall short. The 120-degree point angle suits a wide range of ferrous and non-ferrous materials. With a 200 mm overall length and a 138 mm flute length, this bit provides extended reach into deep-hole applications. A licensed HVAC, industrial maintenance, or mechanical contractor would typically encounter this bit in metal fabrication and equipment repair work. The right-hand spiral flute with fast spiral type evacuates chips efficiently during extended drilling operations.

This bit is suited for industrial and commercial drilling applications where deep-hole access is required. The straight-cylindrical shank with a 15/64-inch diameter fits standard drill chucks without adapters. R-thinned web geometry at the point reduces thrust force and improves entry into harder stock. The Series 1750 designation places this in OSGs high-performance cobalt line, appropriate for use in steel, stainless steel, cast iron, and similar hard metals. Machinists, tool-and-die technicians, and industrial maintenance pros typically specify this bit for production and repair drilling.

Key Features

• M6K cobalt steel construction for heat resistance and extended tool life in hard metals
• WXL coating reduces friction and improves wear resistance
• 120-degree standard point angle for versatile material entry
• Fast spiral flute type promotes efficient chip evacuation in deep holes
• R-thinned web reduces drilling thrust and centers the point reliably
• Extended 200 mm overall length for deep-hole reach beyond standard bit capacity

Compatibility

Designed as an OEM-style replacement or direct-use extra length cobalt drill bit compatible with standard straight-cylindrical chuck systems accepting a 15/64-inch shank diameter.

Installation Notes

This bit is installed by machinists and industrial maintenance technicians using standard drill chucks or CNC drilling equipment. Secure the shank fully in the chuck before operation and verify runout before drilling production parts. Use appropriate cutting fluid or coolant for hard metal applications to maximize tool life. Inspect the point and flute condition before each use and replace the bit if chipping or excessive wear is observed.