Guhring 9055190091300 Cobalt Jobber Drill Bit 23/64

Product Description

The GUHRING 9055190091300 is a cobalt jobber-length drill bit with a titanium nitride (TiN) coating, designed for high-performance drilling in a range of metallic and non-metallic workpiece materials. Built to DIN 338 standards, this bit features a 23/64-inch (0.3594 inch) diameter, a 118-degree four-facet split point, and a two-flute right-hand spiral configuration. The M35 cobalt steel construction resists heat buildup during prolonged drilling cycles, making it well-suited for production environments and job-site work alike. Licensed HVAC, plumbing, and mechanical tradespeople will recognize this as a dependable general-purpose bit for structural and equipment drilling tasks.

This drill bit is appropriate for use in aluminum, steel, cast iron, and other common trade materials as indicated by its K, M, N, and P workpiece material classifications. It is sized at 23/64 inches and carries a 125 mm overall length with an 81 mm flute length, fitting standard three-jaw chucks and magnetic drill presses commonly used in sheet metal, HVAC fabrication, and mechanical rough-in work. The straight-cylindrical shank ensures secure seating in conventional drill presses and hand drills.

Key Features

• M35 cobalt steel construction for elevated heat resistance during extended drilling
• TiN coating extends cutting edge life and reduces friction
• 118-degree four-facet split point with web thinning for easier starting and reduced thrust
• Right-hand, regular spiral flute with 5xD flute-to-diameter ratio for efficient chip evacuation
• DIN 338 standard compliance for consistent dimensional accuracy
• Diameter tolerance held to +0.000 / -0.022 mm for precision fitment

Compatibility

Designed as a jobber-length replacement drill bit conforming to DIN 338 specifications, suitable for use in standard drill presses, hand drills, and CNC drilling applications where a 23/64-inch straight-shank cobalt bit is required.

Installation Notes

This bit is installed by a machinist, fabricator, or qualified tradesperson using a standard chuck or collet system. Ensure the drill is powered off and the chuck is fully secured before beginning any drilling operation. Always match spindle speed to the workpiece material and bit diameter per standard machining guidelines. Use appropriate cutting fluid when drilling ferrous materials to preserve coating life and maintain dimensional accuracy.