Cleveland C16554 Cobalt Jobber Drill Bit Wire 52

Product Description

The CLEVELAND C16554 is a cobalt jobber-length drill bit in wire gauge size 52, with a decimal diameter of 0.0635 inches. Built from M42 cobalt high-speed steel, it carries a gold oxide coating that improves heat and wear resistance during high-speed drilling operations. The 135-degree split point reduces walking and lowers the thrust force needed to start a hole without a center punch. At 1.875 inches overall length with a 0.875-inch flute length, this is a short, rigid bit suited for close-tolerance work in tough materials. Machinists, maintenance techs, and metalworking tradespeople are the primary users.

The C16554 is designed for drilling cast iron, stainless steel, carbon steel, and non-ferrous metals where heat buildup and work hardening are concerns. The parabolic flute geometry clears chips aggressively, making it a practical choice for deeper holes in stainless or alloy steel without pecking as frequently. The straight-cylindrical shank fits standard drill chucks and collets sized to 0.0635 inches. This bit is sold individually and is appropriate for production drilling, repair, and fabrication environments.

Key Features

• M42 cobalt steel construction for elevated heat resistance in hard-metal drilling
• 135-degree split point starts on contact and reduces thrust force
• Parabolic flute design improves chip evacuation in deep-hole applications
• Gold oxide finish extends tool life by reducing friction and oxidation
• Web-thinned tapered web for improved cutting efficiency at small diameters
• Meets ASME B94.11M and DIN 338 dimensional standards

Compatibility

Designed as an OEM-style replacement or direct-use jobber drill bit for any standard drill chuck or collet accepting a 0.0635-inch straight-cylindrical shank. Suitable for use in benchtop drill presses, CNC machining centers, and handheld power drills configured for metalworking.

Installation Notes

This bit is installed and removed by a qualified machinist or metalworking technician using a standard keyed or keyless chuck. Secure the shank fully in the chuck before operating. Coolant-through is not supported; apply cutting fluid externally when drilling stainless steel or hardened alloys to manage heat. Inspect the cutting edges before each use and replace if chipping or dulling is observed to avoid workpiece damage.