Guhring 9005520043900 Stub Drill Bit 0.173 in Hss

Product Description

The GUHRING 9005520043900 is a screw machine length (stub) drill bit designed for high-performance drilling in production and machine shop environments. Built from high speed steel with a bright, uncoated finish, this bit features a parabolic flute geometry and a web-thinned parallel web configuration that improves chip evacuation and reduces thrust in shorter-reach applications. The 130-degree drill point angle is well suited for cutting aluminum and similar non-ferrous materials. With a straight-cylindrical shank, it mounts directly in standard drill chucks and quick-change tool holders. This bit conforms to DIN 1897 standards and is classified as a high-performance grade tool.

This drill bit is intended for use in screw machine setups, CNC machining centers, drill presses, and manual machine tools where a stub-length bit provides greater rigidity and reduced deflection compared to jobber-length drills. Its primary listed workpiece material is aluminum, making it a practical choice for machining aluminum components in manufacturing, fabrication, and production environments. The 3xD flute-to-diameter ratio supports controlled chip removal at moderate drilling depths.

Key Features

• 0.173 inch (wire size No. 17) diameter with a tolerance of +0.000 to -0.018 mm for consistent hole sizing
• Parabolic flute design with web thinning promotes efficient chip evacuation and lower cutting resistance
• 130-degree standard point angle optimized for aluminum and non-ferrous workpiece materials
• Stub length construction increases rigidity and reduces bit deflection in short-reach drilling operations
• Bright, uncoated high speed steel finish suitable for general-purpose and aluminum drilling without heat-related coating concerns
• Conforms to DIN 1897 specification for consistent dimensional and performance standards

Compatibility

Designed as an OEM-style stub drill bit conforming to DIN 1897 standards, compatible with standard drill chucks and quick-change holders accepting straight-cylindrical shanks in the applicable diameter range.

Installation Notes

This drill bit is installed by machinists and tooling technicians in machine shop environments. Secure the straight-cylindrical shank fully and concentrically in the chuck or collet before operation to prevent runout. Select appropriate spindle speed and feed rate for the workpiece material; aluminum typically allows higher speeds than ferrous metals. Inspect the cutting edges for wear before each use and replace the bit if the point is chipped or the cutting edges are dull to avoid poor hole quality or workpiece damage.