Cleveland C09661 Extra Length Drill Bit 3/16 in Hss

Product Description

The CLEVELAND C09661 is a 3/16-inch diameter extra length drill bit designed for deeper drilling and long-reach applications where standard-length bits fall short. Built from high-speed steel with an oxide finish, it features a 118-degree standard point angle and a web-thinned, tapered web configuration that reduces thrust during entry and improves chip evacuation. The two-flute spiral design with right-hand cutting direction suits production and maintenance drilling alike. At 8 inches overall length with a 5.5-inch flute length, this bit gives trades workers the reach needed to drill through thick stock, deep cavities, or stacked materials without repositioning. Licensed machinists, HVAC fabricators, pipefitters, and general maintenance technicians are the primary users.

This extra length drill bit is built for cast iron and steel as its primary workpiece materials, with cast iron also listed as a secondary material. It fits typical applications such as drilling through structural steel members, heavy-gauge sheet metal assemblies, pipe flanges, and mechanical equipment frames where a standard jobber-length bit cannot reach. The general-purpose grade and ANSI and ASME B94.11M compliance make it a reliable choice for both shop and field use.

Key Features

• 3/16-inch diameter with a straight-cylindrical shank of matching 3/16-inch diameter for secure chuck engagement
• 8-inch overall length and 5.5-inch flute length for deep-reach and long-reach drilling tasks
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust and cleaner starts
• High-speed steel construction with oxide finish for wear resistance and heat dissipation
• Right-hand spiral flute in regular helix for efficient chip removal from deep holes
• Diameter tolerance of +0.0000 to -0.0007 inches for consistent, accurate hole sizing

Compatibility

Designed as a general-purpose extra length drill bit compatible with any standard 3/8-inch or larger keyed or keyless drill chuck that accepts a 3/16-inch straight-cylindrical shank. Rated for use in cast iron and steel workpieces.

Installation Notes

This bit is installed by licensed machinists, pipefitters, HVAC technicians, and maintenance trades using standard drill presses, magnetic drills, or portable hand drills. Secure the straight-cylindrical shank fully in the chuck before operation to prevent slippage under torque. Use appropriate cutting fluid or cutting oil when drilling steel or cast iron to extend bit life and reduce heat buildup. Comply with applicable workplace safety standards and wear appropriate eye and hand protection during use.