Guhring 9005490011800 No. 56 Hss Jobber Drill Bit

Product Description

The GUHRING 9005490011800 is a jobber-length twist drill bit in wire gauge size No. 56, measuring 0.0465 inches in diameter. Built from high-speed steel (HSS) with a bright uncoated finish, this bit is part of the Series 549 high-performance line and conforms to DIN 338. It features a parabolic flute geometry and a 130-degree split point with web thinning, which reduces thrust and improves chip evacuation. The straight-cylindrical shank seats directly in standard drill chucks. Machinists, maintenance techs, and precision fabricators use this bit for small-hole drilling in production and repair applications.

This drill bit is rated for use in aluminum and similar non-ferrous and ferrous materials, reflected in its workpiece material codes K, N, and P. The parabolic flute design with a 5xD flute-to-diameter ratio supports efficient chip removal in deeper hole cycles. The maximum drilling depth is 0.481 inches (12.23 mm), making it well suited for shallow precision holes in sheet metal, light alloys, and general machining. It ships individually but carries a minimum order quantity of 10 units, consistent with production shop procurement.

Key Features

• Wire gauge size No. 56, 0.0465 inches diameter — consistent sizing for precision small-hole work
• Parabolic flute geometry with 5xD ratio promotes fast chip evacuation and reduced heat buildup
• 130-degree split point with web thinning lowers entry thrust and reduces walking on hard surfaces
• DIN 338 standard — interchangeable with other DIN 338 compliant tooling
• Bright uncoated finish — suitable for re-sharpening and inspection of cutting edge condition
• High-performance HSS grade rated for aluminum, non-ferrous, and general-purpose ferrous applications

Compatibility

Designed as a DIN 338 compliant jobber-length drill bit for use in standard drill chucks accepting straight-cylindrical shanks at 0.0465 inches shank diameter. Compatible with workpiece material codes K (cast iron and non-ferrous), N (aluminum and non-ferrous metals), and P (steel and ferrous alloys) as specified by the manufacturer.

Installation Notes

Installation is performed by machinists or maintenance technicians using a standard keyed or keyless drill chuck on a drill press, CNC machine, or hand drill. Ensure the shank is fully seated and the chuck is tightened securely before operation. For small-diameter bits like this, use appropriate spindle speeds per material guidelines to avoid deflection or breakage. Inspect the cutting edge before each use — bright-finish bits show wear visually and can be resharpened with appropriate equipment.