Cleveland C16658 Cobalt Jobber Drill Bit Wire 45

Product Description

The CLEVELAND C16658 is a cobalt jobber length drill bit designed for heavy-duty drilling applications in hard and abrasive materials. Built from M42 cobalt high-speed steel and finished with a titanium nitride (TiN) coating, this bit delivers extended tool life in demanding production and maintenance environments. It features a 135-degree split point for fast, accurate starts with minimal walking, and a parabolic flute geometry for efficient chip evacuation. The overall length is 2.125 inches with a flute length of 1.125 inches. Licensed machinists, maintenance mechanics, and trade professionals installing fasteners in tough substrate materials are the primary users of this bit.

This drill bit is suited for use in metal fabrication, HVAC equipment assembly, mechanical contracting, and general industrial maintenance where hard or work-hardening metals are encountered. The straight-cylindrical shank fits standard drill chucks without adapters. The right-hand cutting direction is compatible with conventional drill press and hand drill operation. The parabolic flute design reduces friction and heat buildup during extended drilling cycles, making it well-suited for stainless steel, high-nickel alloys, and other challenging materials common in trade work.

Key Features

• M42 cobalt steel construction for heavy-duty cutting performance in hard metals
• TiN coating extends surface hardness and reduces friction at the cutting edge
• 135-degree split point reduces thrust and eliminates center-punch requirements
• Parabolic flute geometry improves chip flow and reduces heat in deep-hole drilling
• Web-thinned, tapered web configuration maintains bit strength while lowering cutting resistance
• Straight-cylindrical shank fits standard 3-jaw drill chucks without modification
• Meets ASME B94.11M and DIN 338 dimensional standards

Compatibility

Designed as a Series 2075T jobber length drill bit in wire gauge size 45 (0.0820 inches decimal), compatible with any standard drill press, magnetic drill, or hand drill with a chuck capacity that accommodates a 0.0820-inch straight-cylindrical shank.

Installation Notes

Secure the straight-cylindrical shank firmly in the drill chuck before operation and verify chuck key removal prior to powering the drill. Use cutting fluid or lubricant when drilling stainless steel or high-nickel alloys to preserve coating life and reduce heat buildup. Do not exceed the recommended feed rate for the workpiece material, as excessive pressure can cause premature tip wear or bit breakage at small diameters. Disposal of worn bits containing cobalt alloys should follow applicable local regulations for metal waste.