Cleveland C15923 Jobber Length Drill Bit Wire 24 Cobalt

Product Description

The CLEVELAND C15923 is a jobber-length twist drill bit designed for drilling superalloys, hard steels, and other demanding materials where standard high-speed steel bits fall short. Built from M42 cobalt high-speed steel with an oxide coating, it runs cooler and resists wear under heavy-duty cutting conditions. The 135-degree split point reduces walking and thrust at entry, making it well suited for production drilling without a center punch. Overall length is 3-1/8 inches with a 1-inch spiral flute length. The straight cylindrical shank measures 0.1520 inches in diameter, matching the wire gauge size 24 decimal equivalent of 0.1520 inches.

This bit is intended for metal fabrication shops, aerospace maintenance, and industrial service work where hole tolerance and tool life matter. The fast spiral flute promotes chip evacuation in deep or interrupted cuts. The tapered web and web-thinned geometry reduce cutting force, which is critical when drilling nickel-based superalloys, titanium, or stainless steel. It is sold individually and fits standard drill chucks accepting straight cylindrical shanks in the 0.1520-inch range. Licensed machinists, tool-and-die workers, and maintenance technicians working to ASME B94.11M standards will find the Series 3780 geometry appropriate for precision hole work.

Key Features

• M42 cobalt HSS construction for heat and wear resistance in superalloy drilling
• 135-degree split point reduces thrust and eliminates walking on entry
• Oxide coating provides lubricity and additional surface hardness
• Fast spiral flute with tapered, web-thinned geometry for efficient chip evacuation
• Diameter tolerance of -0.0007 to 0.0000 inches for consistent, close-tolerance holes
• Meets ASME B94.11M and NAS specification designations

Compatibility

Designed as an OEM-style jobber-length drill bit suitable for use in standard drill presses, CNC machining centers, and hand-held power drills equipped with chucks accepting 0.1520-inch straight cylindrical shanks.

Installation Notes

Installation of this bit requires a clean, properly sized drill chuck; inspect chuck jaws for wear before seating the shank. Always power down and lock out the drilling machine before changing bits. Use appropriate cutting fluid or coolant when drilling superalloys or stainless steel to extend tool life, noting this bit does not support coolant-through delivery. Verify workpiece is firmly clamped per shop safety standards before beginning the cut.