Guhring 9005520032500 Stub Drill Bit 0.128 in Hss

Product Description

The GUHRING 9005520032500 is a screw machine length (stub) drill bit designed for high-performance drilling in aluminum and other non-ferrous materials. Built to DIN 1897 standards, this Series 552 bit features a 130-degree point angle and a parabolic flute geometry that promotes efficient chip evacuation and reduces heat buildup during drilling cycles. The straight-cylindrical shank measures 0.128 inches in diameter and is compatible with standard drill chucks. Web thinning at the tip lowers thrust requirements and improves hole entry. Intended for use by machinists, tool and die workers, and maintenance trades operating drill presses, CNC machines, or hand-held power tools in production environments.

This stub-length drill bit is suited for applications where a shorter flute length improves rigidity and reduces deflection, particularly in shallow-hole drilling operations. The 0.128-inch (3.25 mm) diameter makes it appropriate for close-tolerance work in aluminum, soft metals, and similar workpiece materials. The parabolic flute design and web-thinned point support consistent performance across repetitive drilling cycles in light manufacturing and job shop settings. Overall length is compact at 1.929 inches, keeping the tool stiff in the cut.

Key Features

• 130-degree point angle with web thinning reduces entry thrust and improves centering
• Parabolic flute geometry accelerates chip removal and reduces heat accumulation
• High speed steel construction provides toughness across a range of workpiece materials
• Bright/uncoated finish — no coating buildup concerns on close-tolerance diameters
• DIN 1897 stub length increases rigidity and minimizes deflection in shallow-hole work
• Parallel web configuration and straight-cylindrical shank for consistent chuck engagement

Compatibility

Designed as an OEM-style replacement or direct-specification stub drill bit for use in standard straight-shank drill chucks and collet systems accepting a 0.128-inch shank diameter. Conforms to DIN 1897 dimensional standards.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with rotating cutting tools. Ensure the drill press, CNC spindle, or hand-held tool is fully powered down and secured before inserting or removing the bit from the chuck. Inspect the cutting edges and shank for damage before each use — do not run a bit with chipped flutes or a damaged shank. Always use appropriate workholding and follow applicable shop safety standards when operating drilling equipment.