Guhring 9005520030500 Stub Drill Bit Size 31 Hss

Product Description

The GUHRING 9005520030500 is a screw machine length (stub) drill bit designed for high-performance drilling in steel, aluminum, and non-ferrous materials. Built from high-speed steel (HSS) with a bright, uncoated finish, it features a 130-degree cone relief point and a parabolic flute geometry that promotes fast chip evacuation and reduces cutting resistance. The bit measures 1-15/16 inches overall length with a 0.6875-inch flute length and a 0.1200-inch cutting diameter. Web thinning at the tip lowers thrust force and improves hole entry. This is a precision ground tool conforming to DIN 1897 and is suited for production and maintenance drilling applications.

This bit is intended for use in screw machine, CNC, and bench drill press setups where a compact stub-length tool is required for rigidity and control in short-depth holes. It is appropriate for residential, commercial, and industrial maintenance work where drilling into steel or non-ferrous stock is routine. The maximum drilling depth is 0.5290 inches, making it well-suited for through-hole and shallow blind-hole work in plate, bar stock, or structural members. Licensed machinists, tool-and-die technicians, and HVAC or plumbing tradespeople using metalworking equipment will find this bit a reliable production-grade option.

Key Features

• HSS construction with bright, uncoated finish for general-purpose metal drilling
• 130-degree cone relief point reduces walking and improves hole entry accuracy
• Parabolic flute with fast spiral promotes efficient chip removal in deep cuts
• Web-thinned parallel web lowers axial thrust and extends tool life
• Stub length (1-15/16 inches OAL) provides added rigidity over jobber-length bits
• Conforms to DIN 1897 standard for consistent dimensional accuracy

Compatibility

Designed as an OEM-style replacement or production tooling option for standard straight-shank drill chucks accepting a 0.1201-inch shank diameter. Compatible with steel, aluminum, and non-ferrous workpiece materials per the manufacturer specification.

Installation Notes

This bit is installed by a machinist or qualified tradesperson into a keyed or keyless chuck on a drill press, screw machine, or CNC machining center. Ensure the chuck is fully tightened and the spindle is at a complete stop before changing bits. Select a spindle speed appropriate for the workpiece material and bit diameter following standard machining feeds-and-speeds references. Do not exceed the 0.5290-inch maximum drilling depth in a single pass without retracting to clear chips.