Cleveland C16538 Cobalt Jobber Drill Bit Wire 36

Product Description

The CLEVELAND C16538 is a cobalt jobber length drill bit in wire gauge size 36, designed for demanding metal drilling applications. Built from M42 cobalt high-speed steel with a gold oxide coating, it delivers heat resistance and wear life that standard HSS bits cannot match. The 135-degree split point starts on contact without walking, eliminating the need for a center punch on most materials. With an overall length of 2.5 inches and a parabolic flute design, the bit clears chips efficiently and reduces heat buildup in deep-hole drilling. Licensed machinists, tool-and-die workers, and field mechanics working with hard or abrasive metals rely on this grade of bit for consistent results.

This bit is rated for use in cast iron, non-ferrous metals, stainless steel, and carbon steel. The wire size 36 designation corresponds to 0.1065 inches in decimal, placing it in the small-diameter range suited for tapping pilot holes, precision clearance holes, and fixture work. The straight-cylindrical shank seats cleanly in standard drill chucks and CNC toolholders. Series 2075 is CLEVELAND's heavy-duty cobalt line, manufactured to ASME B94.11M and DIN 338 standards, making it appropriate for both job-site and production-floor use.

Key Features

• M42 cobalt steel construction for heat resistance in hard and abrasive materials
• 135-degree split point reduces thrust and eliminates center-punch requirements on most surfaces
• Parabolic flute geometry improves chip evacuation and reduces heat in deep holes
• Gold oxide finish provides additional lubricity and corrosion resistance
• Web-thinned tapered web lowers cutting resistance and extends tool life
• Meets ASME B94.11M and DIN 338 standards for dimensional consistency

Compatibility

Designed for use in standard drill chucks and CNC toolholders accepting a 0.1065-inch straight-cylindrical shank. Suitable for drilling cast iron, non-ferrous metals, stainless steel, and carbon steel. Part of the CLEVELAND Series 2075 heavy-duty cobalt drill line.

Installation Notes

Install in a properly sized drill chuck or collet and verify runout before starting. Secure the workpiece firmly to prevent movement on breakthrough. Use appropriate cutting fluid when drilling stainless steel or hardened steel to extend bit life and manage heat. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.