Guhring 9005490104900 Jobber Drill Bit Letter Z Hss

Product Description

The GUHRING 9005490104900 is a jobber length drill bit sized to letter Z (0.4130 inches) and manufactured from high speed steel with a bright uncoated finish. Designed to DIN 338 standards, this Series 549 bit features a parabolic flute geometry and a 130-degree standard point angle with web thinning for reduced thrust and cleaner entry. The straight-cylindrical shank measures 0.4130 inches in diameter, and the overall length is 5.25 inches with a flute length of 3.4375 inches. Right-hand cut direction and a tapered web configuration make this a high-performance general-purpose drill suited to production and maintenance environments alike. Licensed HVAC techs, machinists, and industrial maintenance professionals reach for this bit when precision hole sizing is required.

This drill bit is rated for use in aluminum and similar non-ferrous and ferrous workpiece materials, as indicated by material codes K, N, and P. The parabolic flute profile improves chip evacuation at higher feed rates, reducing the risk of chip packing in deeper holes. With a maximum drilling depth of 2.806 inches (71.27 mm) and a flute-to-diameter ratio of 5xD, it handles standard jobber-depth applications in sheet metal, structural stock, and machined components. It is sold individually and is appropriate for use in hand drills, drill presses, and CNC machining centers where a straight-cylindrical shank is compatible.

Key Features

• Letter Z size — 0.4130 inches diameter for precision fit requirements
• Parabolic flute design promotes efficient chip evacuation at higher feeds
• 130-degree point angle with web thinning reduces entry thrust
• Tapered web configuration adds rigidity along the flute length
• Bright uncoated HSS construction — suitable for regrinding and resharpening
• Manufactured to DIN 338 specification for consistent dimensional tolerances

Compatibility

Designed as an OEM-style jobber length drill bit compatible with any drill press, hand drill, or CNC spindle accepting a straight-cylindrical shank of 0.4130 inches. Primary workpiece material ratings cover aluminum (K), non-ferrous metals (N), and steel (P) per supplier specification.

Installation Notes

Install this bit in a properly sized chuck and verify runout before drilling. Power down and de-energize any machine tool before changing bits. Follow applicable shop safety codes and use appropriate cutting fluid or lubrication for the workpiece material. Do not exceed the recommended maximum drilling depth of 2.806 inches without pecking cycles to clear chips.