Osg 215-0781 Jobber Drill Bit 5/64 Inch 135 Degree

Product Description

The OSG 215-0781 is a 5/64 inch (0.0781 inch decimal) high-speed jobber-length drill bit designed for general-purpose drilling in a wide range of metallic and non-metallic materials. Built to Series 215 heavy-duty grade standards, it features a 135-degree split point angle with web thinning that reduces walking on entry and lowers thrust force required at the drill. The bright, uncoated finish means this bit is ready to run as-delivered without a break-in coating cycle. With a slow spiral flute geometry and tapered web configuration, it is well-suited for controlled chip evacuation in tighter-tolerance applications. The overall length is 1-11/16 inches with a 11/16 inch flute length, keeping deflection minimal at this small diameter.

This drill bit is used in light-duty production drilling, maintenance and repair operations, and fabrication work where small-diameter precision holes are needed. Primary workpiece materials include steel, alloy steel, stainless steel, cast iron, aluminum silicate, nickel alloy, titanium, and titanium alloy. The straight cylindrical shank seats directly into standard drill chucks, making it compatible with handheld drill drivers, drill presses, and CNC drill stations. Right-hand cutting direction is standard for conventional drilling operations in trade and shop environments.

Key Features

• 5/64 inch diameter with a tight tolerance of +0 to -0.013 mm for consistent hole quality
• 135-degree standard point angle with web thinning reduces walking and entry thrust
• Slow spiral flute design promotes controlled chip evacuation in steel and hard alloys
• Bright uncoated finish suitable for general-purpose use across a broad material range
• Straight cylindrical shank fits standard drill chucks without adapters
• Heavy-duty drill bit grade rated for Series 215 general-purpose performance

Compatibility

Designed for use with standard drill chucks accepting straight cylindrical shanks at 0.0781 inch shank diameter. Compatible primary workpiece materials include steel, alloy steel, stainless steel, cast iron, aluminum silicate, nickel alloy, titanium, and titanium alloy, as specified for the OSG Series 215 line.

Installation Notes

Installation of this bit is performed by machinists, tool-and-die technicians, or trade professionals using a drill press, hand drill, or CNC drilling equipment. Ensure the chuck is fully tightened and the shank is fully seated before operation. At this diameter, reduced RPM and consistent feed pressure help prevent bit breakage. Eye protection and appropriate guarding should be in place per shop safety standards.