Chicago-latrobe 54030 Cobalt Jobber Drill Bit Size 20

Product Description

The CHICAGO-LATROBE 54030 is a cobalt jobber length drill bit in wire gauge size 20 (0.1610 inches decimal), designed for high-performance drilling in tough materials. Built from M42 cobalt high-speed steel and finished with a titanium nitride (TiN) coating, it delivers extended tool life in applications that would quickly wear down standard high-speed steel bits. The 135-degree split point reduces walking and lowers the thrust needed to start a hole, making it a reliable choice for production and maintenance drilling. Overall length is 3.25 inches with a 2.125-inch flute length. This bit is sold individually and suited for trade professionals who demand consistent performance from a heavy-duty cutting tool.

This drill bit is engineered for use in stainless steel and general steel applications where heat buildup and work hardening are common challenges. The cobalt M42 substrate resists softening at elevated cutting temperatures, while the TiN coating reduces friction and improves chip evacuation. It is a practical choice for HVAC sheet metal work, plumbing rough-in through steel framing, electrical panel and conduit installations, and general mechanical fabrication. The straight-cylindrical shank seats securely in standard drill chucks and precision collets. It conforms to DIN 338 and NAS 907 Type J standards, making it appropriate for aerospace-adjacent MRO and commercial construction trades.

Key Features

• M42 cobalt high-speed steel construction for heat and wear resistance in hard metals
• Titanium nitride (TiN) coating reduces friction and extends service life
• 135-degree split point minimizes drill walking and reduces entry thrust
• Web-thinned, tapered web design improves chip flow and cutting efficiency
• Right-hand, regular spiral flute with straight-cylindrical shank fits standard chucks
• Meets DIN 338 and NAS 907 Type J standards for dimensional and performance consistency

Compatibility

The 54030 is part of Chicago-Latrobe Series 2550 and is sized for wire gauge 20 (0.1610 inches), conforming to NAS 907 Type J and DIN 338 jobber length specifications. It is intended for drilling stainless steel and steel workpieces and fits any standard drill chuck or collet accepting a 0.1610-inch straight-cylindrical shank.

Installation Notes

This drill bit is installed and used by licensed tradespeople and experienced machinists working with steel and stainless steel. Always use appropriate cutting fluid or coolant when drilling stainless steel to manage heat and prevent work hardening. Secure the workpiece firmly and use a consistent feed rate to avoid bit deflection or breakage. Inspect the cutting edges and TiN coating before each use and remove from service when wear is visible.