Cleveland C16618 Cobalt Jobber Drill Bit Wire Size 7

Product Description

The CLEVELAND C16618 is a jobber-length drill bit in wire gauge size 7 (0.2010 inches diameter), designed for heavy-duty metal drilling applications. Built from M42 cobalt high-speed steel with a titanium nitride (TiN) coating, this bit delivers elevated heat and wear resistance compared to standard HSS tooling. The 135-degree split point reduces walking on entry and lowers thrust force, making it well suited for drilling harder ferrous and non-ferrous materials. With a parabolic flute design and web-thinned, tapered web configuration, the C16618 promotes efficient chip evacuation and reduced heat buildup during deep-hole drilling operations.

This bit is appropriate for use in production drilling, maintenance and repair operations, and fabrication environments where cobalt tooling is specified for alloy steels, stainless steel, cast iron, and other hard materials. The straight-cylindrical shank (0.2010 inches diameter) accepts standard drill chucks on portable drills, drill presses, and CNC equipment. It is a single-piece unit sold individually and is intended for installation and use by machinists, toolmakers, maintenance technicians, and skilled tradespeople working with metal.

Key Features

• M42 cobalt HSS construction for superior heat resistance and extended tool life in hard materials
• Titanium nitride (TiN) coating reduces friction and increases surface hardness
• 135-degree split point for reduced thrust and self-centering entry without a pilot hole
• Parabolic flute geometry promotes fast chip evacuation and reduced heat in deep holes
• Web-thinned tapered web lowers cutting resistance and extends bit life
• Right-hand cut with straight-cylindrical shank for broad chuck compatibility
• Meets ASME B94.11M and DIN 338 standards

Compatibility

Designed as an OEM-style replacement or direct specification-match jobber-length drill bit for applications requiring a wire gauge size 7 (0.2010 inches) cobalt bit with a straight-cylindrical shank; fits standard drill chucks on portable, bench, and machine tool spindles accepting that shank diameter.

Installation Notes

Secure the straight-cylindrical shank firmly in a properly sized drill chuck before operation; ensure the chuck key is removed before powering on any drill press or portable drill. Apply cutting fluid or coolant appropriate for the workpiece material to maximize tool life, as this bit does not support through-coolant delivery. Operate at cutting speeds and feed rates appropriate for cobalt HSS tooling and the specific workpiece material per standard machining references. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.