Guhring 9055240059400 Cobalt Stub Drill Bit 5.94mm

Product Description

The GUHRING 9055240059400 is a cobalt stub-length (screw machine length) drill bit designed for precision drilling in metal fabrication and machining applications. Built to DIN 1897 standards, this bit features a 118-degree four-facet split point with web thinning for reduced thrust and cleaner entry. The M35 cobalt construction provides heat resistance for demanding production environments. At 5.94mm (0.2339 inches) in diameter and 66mm (2.598 inches) overall length, it fits standard straight-shank toolholders and is sized to Letter A. Two spiral flutes and a bright uncoated finish round out the design.

This drill bit is suited for right-hand drilling in aluminum and similar non-ferrous materials, though the cobalt grade also handles steel and cast iron at controlled feed rates. The stub-length profile reduces deflection in short-reach setups, making it a reliable choice for drill press work, CNC machining centers, and hand-held production drilling. The tapered web configuration and web-thinned point ease chip evacuation on breakthrough cuts. This bit is sold individually and is intended for use by machinists, tool-and-die makers, and maintenance technicians.

Key Features

• M35 cobalt steel construction for heat resistance and extended tool life in metal drilling
• 118-degree four-facet split point with web thinning reduces entry thrust and improves hole accuracy
• Stub length (66mm overall) minimizes deflection in short-reach setups
• Straight-cylindrical shank (5.94mm / 0.2339 inches) fits standard drill chucks and collets
• Two spiral flutes with regular spiral promote efficient chip evacuation
• Bright uncoated finish preserves dimensional tolerance out of the box
• Conforms to DIN 1897 standard for consistent interchangeability

Compatibility

Designed as a DIN 1897-compliant stub-length drill bit with a straight-cylindrical shank, this bit fits any standard drill chuck or collet accepting a 5.94mm (0.2339-inch) shank diameter. It is sized to Letter A per standard drill size charts.

Installation Notes

This drill bit is installed and replaced by machinists and maintenance technicians using standard chuck keys or collet wrenches. Always power down and de-energize the spindle before changing tooling. Secure the shank fully within the chuck or collet to the recommended grip depth to prevent slippage during cutting. Follow applicable shop safety standards and machine manufacturer guidelines for feed rate and spindle speed when drilling into the workpiece material.