Cleveland C70171 Jobber Drill Bit 38 Cobalt 135

Product Description

The CLEVELAND C70171 is a jobber-length drill bit designed for precision drilling in metalworking and fabrication applications. Built from M42 cobalt high-speed steel with a gold oxide coating, this bit handles tough materials including aluminum and other non-ferrous metals with consistent performance. It carries a wire gauge size of 38, equivalent to 0.1015 inches in decimal. The 135-degree split point reduces walking on entry and lowers the thrust needed to start a hole. With a 2-flute spiral flute design and web-thinned, tapered web configuration, chip evacuation stays efficient throughout the cut. Licensed tradespeople and machinists working to NAS 907 Type J specification will find this bit meets those standards directly.

This bit is suited for light to medium-duty drilling in shop and field settings where wire-gauge sizing is specified. It fits applications in HVAC fabrication, plumbing rough-in, electrical panel work, and general metal fabrication. The straight-cylindrical shank seats securely in standard drill chucks and is compatible with benchtop drill presses, hand drills, and CNC equipment that accepts the 0.1015-inch shank diameter. It is sold individually with a minimum order quantity of 12 units per order.

Key Features

• M42 cobalt steel construction for elevated heat and wear resistance
• Gold oxide coating reduces friction and extends cutting life
• 135-degree split point for self-centering entry and reduced thrust
• Web-thinned tapered web for improved chip clearance
• Right-hand cut with regular spiral flute geometry
• Meets NAS 907 Type J specification for heavy-duty drilling applications

Compatibility

Designed as a jobber-length replacement or supplemental drill bit for operations requiring wire gauge size 38 at 0.1015 inches diameter, suitable for use with standard drill chucks and compatible drilling equipment accepting a straight-cylindrical shank.

Installation Notes

Install in a properly rated drill chuck and tighten securely before use. Confirm spindle speed is appropriate for the workpiece material and bit diameter before starting the cut. Secure the workpiece firmly to prevent movement during drilling. Inspect the cutting edges for wear or chipping before each use and replace the bit when the point shows signs of dulling to maintain hole quality and dimensional accuracy.