Guhring 9006530079400 5/16 in Stub Drill Bit Hss Tin

Product Description

The GUHRING 9006530079400 is a screw machine length (stub) drill bit designed for high-speed, close-tolerance drilling in metalworking applications. Built to DIN 1897 standards from M2 high-speed steel with a titanium nitride (TiN) coating, this bit delivers consistent performance on cast iron and steel. The 118-degree standard point angle and web-thinned, tapered web geometry reduce entry resistance and improve centering accuracy. At 3.1102 inches overall length with a 1.4567-inch flute length, this short-series bit suits drill press and CNC applications where rigidity and reduced deflection are priorities. Diameter tolerance is held to +0.000 to -0.022 mm for precise hole sizing.

This drill bit is suited for production machining, machine shop, and maintenance environments where stub-length geometry is preferred over jobber-length bits. The straight-cylindrical shank accepts standard drill chucks without modification. Primary workpiece materials are cast iron and steel, making it a fit for general fabrication, repair, and light manufacturing work. The 3xD flute-to-diameter ratio keeps chips moving efficiently at typical drilling depths for this size class.

Key Features

• M2 high-speed steel construction with TiN coating for extended tool life on ferrous materials
• 118-degree standard point angle with web-thinned, tapered web for improved entry and chip clearance
• Stub length (DIN 1897) reduces deflection and increases rigidity in short-reach drilling setups
• Spiral flute, right-hand cutting, with 3xD flute-to-diameter ratio for effective chip evacuation
• Diameter tolerance +0.000 to -0.022 mm for consistent, close-tolerance hole production
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as an OEM-style replacement or direct-use stub drill bit for production and maintenance drilling in cast iron and steel; compatible with any drill press, CNC machining center, or hand drill accepting a 5/16-inch straight-cylindrical shank.

Installation Notes

Installation of this drill bit is performed by machinists or maintenance technicians using a standard drill chuck keyed or keyless to the appropriate spindle. Secure the shank fully in the chuck before operation and confirm runout is within acceptable limits for the application. Always power down and lock out the machine before changing tooling. Use appropriate cutting fluid or coolant as required by the workpiece material, noting this bit does not support through-coolant delivery.