Guhring 9005490033000 Jobber Drill Bit 3.3mm Hss

Product Description

The GUHRING 9005490033000 is a jobber length drill bit designed for precision drilling in metalworking and fabrication applications. Built from high speed steel with a bright uncoated finish, this bit features a parabolic flute geometry and a web-thinned, tapered web configuration that promotes efficient chip evacuation and reduced thrust. The 130-degree point angle suits a wide range of materials, and the straight-cylindrical shank provides positive seating in standard chucks. At 65.00 mm (approximately 2-9/16 inches) overall length with a 36.00 mm flute length, it fits standard drill presses, CNC machining centers, and hand-held power drills used by machinists and maintenance technicians.

This drill bit is rated as a high performance grade tool conforming to DIN 338, making it appropriate for production drilling in aluminum, non-ferrous metals, and plastics. The parabolic flute design supports a 5xD flute-to-diameter ratio, which aids chip removal during deeper passes. It is well suited for repetitive hole-making tasks in light manufacturing, HVAC equipment fabrication, plumbing fixture work, and general metal fabrication where consistent hole diameter and finish are required. Maximum drilling depth reaches 31.05 mm (1.222 inches).

Key Features

• High speed steel construction rated to DIN 338 high performance grade
• Parabolic flute geometry with 5xD ratio for efficient chip evacuation
• Web-thinned tapered web reduces drilling thrust and entry force
• 130-degree standard point angle suitable for aluminum, plastics, and soft metals
• Bright uncoated finish — no coating buildup to affect tight diameter tolerances
• Diameter tolerance held to -0.018 to 0.000 mm for consistent hole sizing

Compatibility

Designed as a DIN 338 jobber length drill bit with a 3.30 mm straight-cylindrical shank, compatible with standard 3-jaw chucks, keyless chucks, and collet holders accepting 3.30 mm round shanks. Primary workpiece material classifications per DIN coding are K, N, and P, corresponding to aluminum and non-ferrous metals, non-metallic materials, and steel respectively.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with rotary cutting tool safety. Secure the shank fully in the chuck before operation and confirm runout is within acceptable limits before drilling. Power down and de-energize any machine tool before changing or inspecting the bit. Do not exceed the rated maximum drilling depth of 31.05 mm in a single pass without pecking to clear chips.