Chicago-latrobe 54060 9/32 Inch Cobalt Jobber Drill Bit

Product Description

The CHICAGO-LATROBE 54060 is a cobalt jobber-length drill bit designed for high-performance drilling in tough materials including stainless steel and alloy steel. Built to M42 cobalt material grade and finished with a titanium nitride (TiN) coating, this bit runs cooler and holds an edge longer than standard high-speed steel alternatives. The 135-degree split point self-centers on contact, reducing walk-out and the need for a center punch. At 4-1/4 inches overall length with a 2-15/16-inch flute, it fits standard jobber-length drill chucks and is suited for hand-held drills, drill presses, and CNC applications. Licensed machinists, pipefitters, and HVAC fabricators reach for this bit when cutting sheet metal, structural steel, or stainless pipe flanges.

This bit is intended for use in metal fabrication, mechanical contracting, and maintenance environments where stainless steel, carbon steel, and similar hard workpiece materials are encountered. The straight-cylindrical shank at 9/32 inch diameter fits standard three-jaw chucks without adapters. Right-hand spiral flutes evacuate chips efficiently during through-hole drilling. The Series 2550 designation and NAS 907 Type J and DIN 338 standards make it a recognized specification bit for aerospace and industrial procurement. Two-flute geometry keeps cutting forces balanced in both hand and machine-drill setups.

Key Features

• M42 cobalt construction delivers heat and wear resistance for hard-metal applications
• TiN coating extends cutting life and reduces friction at the cutting edge
• 135-degree split point self-centers and reduces thrust force required to start the hole
• Web-thinned, tapered web reduces torque and improves chip clearing in deep holes
• Right-hand, regular-spiral flute geometry provides efficient chip evacuation
• Meets DIN 338 and NAS 907 Type J specifications for precision industrial use

Compatibility

Designed as a jobber-length replacement or specification drill bit for metal-drilling applications requiring NAS 907 Type J or DIN 338 compliance, including stainless steel and carbon steel workpieces.

Installation Notes

Install in a properly sized three-jaw chuck and confirm the shank is fully seated before operation. Use cutting fluid or coolant when drilling stainless steel to manage heat buildup and extend bit life, even though coolant-through is not supported by this bit internally. Operate at speeds appropriate for cobalt tooling in hard metals — consult the drill speed chart for the workpiece material and bit diameter. Inspect the cutting edges before each use and replace if chipping or dullness is observed to avoid work-hardening the hole entrance in stainless steel.