Cleveland C16974 Cobalt Jobber Drill Bit Wire 43

Product Description

The CLEVELAND C16974 is a cobalt jobber length drill bit sized to wire gauge 43, with a decimal diameter of 0.0890 inches. Manufactured from M42 cobalt high-speed steel and finished with a TiAlN coating, this bit is built for drilling hard and abrasive materials in demanding shop and field environments. The 135-degree split point initiates cutting without a center punch and reduces walking on entry. A parabolic flute geometry improves chip evacuation and reduces heat buildup during deep drilling. Overall length is 2.25 inches, with a 1.25-inch flute length and a straight-cylindrical shank. Machinists, tool-and-die technicians, and maintenance mechanics are the primary users.

This bit is suited for drilling cast iron and stainless steel in both production machining and maintenance-repair operations. The parabolic flute and TiAlN coating work together to extend tool life when cutting work-hardening alloys such as 304 and 316 stainless steel. The web-thinned, tapered web design reduces thrust force required at the spindle, making this size practical for use in hand drills and drill presses alike. It is sold individually and is appropriate wherever precise, small-diameter holes are required in hard ferrous materials.

Key Features

• M42 cobalt steel construction for heat resistance and extended tool life in hard materials
• TiAlN coating reduces friction and thermal load during high-speed cutting
• 135-degree split point for self-centering entry without a pilot hole
• Parabolic flute geometry promotes efficient chip clearing in deep holes
• Web-thinned tapered web reduces drilling thrust and spindle load
• Straight-cylindrical shank fits standard drill chucks without adapters
• Conforms to ASME B94.11M and DIN 338 standards

Compatibility

Designed as an OEM-style jobber drill bit in Series 2075A, suitable for use in standard drill presses, CNC machining centers, and hand drills accepting straight-cylindrical shanks. Primary workpiece materials are cast iron and stainless steel per manufacturer specification.

Installation Notes

This bit is installed by a machinist or maintenance technician into any chuck accepting a 0.0890-inch straight-cylindrical shank. Secure the workpiece completely before beginning the cut to prevent deflection on small-diameter drills. Use appropriate cutting fluid or coolant rated for cobalt tooling when drilling stainless steel to manage heat buildup. Inspect the split point for chipping after use on hardened or abrasive materials and replace before the point geometry degrades to avoid oversized holes.