Cleveland C16509 Cobalt Jobber Drill Bit Size 7 135 Deg

Product Description

The CLEVELAND C16509 is a cobalt jobber-length drill bit sized at wire gauge No. 7, equivalent to 0.2010 inches in diameter. Built from M42 cobalt high-speed steel and finished with a gold oxide coating, this bit is engineered for heavy-duty drilling in demanding materials. The 135-degree split point reduces walking and cutting thrust, while the parabolic flute geometry improves chip evacuation and helps maintain cutting speed through deeper holes. At 3.625 inches overall length with a 2.4375-inch flute length, it fits standard jobber-length applications across shop and field environments. Licensed HVAC technicians, pipefitters, and machinists reaching for a reliable production-grade bit will find this fits standard drill chucks without modification.

This bit is suited for drilling cast iron, non-ferrous metals, stainless steel, and carbon steel in both production and maintenance applications. The straight-cylindrical shank seats securely in keyed or keyless chucks on handheld drills, drill presses, and CNC machining centers. The parabolic flute design makes it particularly effective in deep-hole drilling where chip packing and heat buildup are common problems with standard helix geometry bits. It is a single-piece, individual-quantity item meeting ASME B94.11M and DIN 338 standards.

Key Features

• M42 cobalt steel construction for extended tool life in hard and abrasive materials
• 135-degree split point for fast engagement and reduced thrust force
• Parabolic flute geometry promotes efficient chip evacuation in deep holes
• Gold oxide coating reduces friction and helps dissipate heat at the cutting edge
• Web-thinned tapered web for reduced cutting resistance
• Straight-cylindrical shank compatible with standard drill chucks
• Meets ASME B94.11M and DIN 338 dimensional standards

Compatibility

Designed as a heavy-duty replacement or production-use jobber-length drill bit for applications involving cast iron, non-ferrous metals, stainless steel, and carbon steel. Fits any standard chuck accepting a 0.2010-inch straight-cylindrical shank.

Installation Notes

Install in a keyed or keyless drill chuck and tighten securely before operation. Power down and de-energize any machine tool before changing bits. Use appropriate cutting fluid or coolant for the workpiece material to maximize bit life, particularly when drilling stainless steel or cast iron. This bit does not support coolant-through delivery; external coolant application is required if cooling is needed.