Cleveland C70140 Cobalt Jobber Drill Bit No 7 0.2010 in

Product Description

The CLEVELAND C70140 is a cobalt jobber-length drill bit in wire gauge size No. 7, equivalent to 0.2010 inches in diameter. Built to Series 2213 standards and conforming to NAS 907 Type J, this M42 cobalt bit carries a gold oxide coating and features a 135-degree split point with web thinning for fast, accurate starts with minimal walking. The right-hand spiral flute design provides efficient chip evacuation. At 3.625 inches overall length with a 2.4375-inch flute, it delivers the reach needed for through-hole work in tight assemblies. This is a heavy-duty tool intended for production and maintenance drilling applications.

The C70140 is rated for primary use on aluminum and is well-suited for non-ferrous metals, plastics, and similar materials where hole accuracy and finish quality matter. With a straight-cylindrical shank diameter of 0.2010 inches and a shank length of 1.1875 inches, it seats securely in standard Jacobs-style chucks and keyless drill chucks found on hand drills, drill presses, and CNC drilling spindles. Machinists, maintenance technicians, and fabricators working in aerospace, HVAC equipment manufacturing, and general metalworking will find this bit a reliable choice for repeatable, close-tolerance holes.

Key Features

• M42 cobalt steel construction for extended tool life in abrasive and tough materials
• Gold oxide coating reduces friction and helps resist heat buildup during drilling
• 135-degree split point with web thinning eliminates the need for a center punch and reduces thrust
• Right-hand, regular spiral flute promotes clean chip removal
• Tapered web configuration adds rigidity and strength at the cutting edge
• Meets NAS 907 Type J specification for dimensional and performance consistency

Compatibility

Designed as a direct-fit jobber-length drill bit for use in any standard chuck accepting a 0.2010-inch straight-cylindrical shank. Rated for aluminum as the primary workpiece material per the manufacturer specification.

Installation Notes

A licensed machinist or experienced maintenance technician should secure the bit firmly in a properly sized chuck before operation, ensuring no runout that could affect hole tolerance. Coolant-through operation is not supported on this bit; use appropriate cutting fluid applied externally when drilling metals. Always confirm spindle speed is appropriate for the material and bit diameter before starting. Inspect the cutting edges for wear or chipping between uses and replace when diameter tolerance can no longer be held.