Chicago-latrobe 54021 Cobalt Jobber Drill Bit Wire 11

Product Description

The CHICAGO-LATROBE 54021 is a cobalt jobber-length drill bit designed for high-performance drilling in tough materials. Built to Series 2550 standards and coated with titanium nitride (TiN), it delivers extended tool life and reduced friction in demanding applications. The bit features a 135-degree split point for fast, self-centering starts with minimal walking, and a web-thinned, tapered web configuration for reduced thrust requirements. At 0.1910 inches in diameter (wire size 11) with an overall length of 3.5 inches and a flute length of 2.3125 inches, this is a compact, precision-ground bit built for daily production use.

This bit is engineered for drilling stainless steel and general-purpose steel in trade and industrial environments. The M42 cobalt high-speed steel construction handles the heat and abrasion generated when cutting hard or work-hardening alloys. Right-hand cut, two-flute spiral design with a straight-cylindrical shank suits standard three-jaw chucks and drill press setups. Typical applications include fabrication shops, mechanical contractors, pipefitters, and maintenance technicians working with stainless fastener holes, structural steel, or high-strength alloys. Meets DIN 338 and NAS 907 Type J standards.

Key Features

• M42 cobalt HSS construction for heat resistance in stainless steel and hard alloys
• Titanium nitride (TiN) coating reduces friction and extends cutting life
• 135-degree split point starts on contact without a center punch
• Web-thinned, tapered web lowers thrust force and reduces heat buildup
• Right-hand cut, two-flute regular spiral for efficient chip evacuation
• Meets DIN 338 and NAS 907 Type J specifications for dimensional accuracy

Compatibility

Designed as an OEM-style jobber-length drill bit compatible with standard three-jaw chucks and drill presses accepting a 0.1910-inch straight-cylindrical shank. Primary workpiece materials include stainless steel and steel.

Installation Notes

Installation and use should be performed by qualified machinists, fabricators, or trade mechanics familiar with rotating cutting tools. Secure the workpiece and ensure the chuck is fully tightened before operation. Use appropriate cutting fluid or coolant when drilling stainless steel to manage heat and extend tool life. Inspect the bit for chipping or wear before each use and replace if the cutting edge is compromised.