Guhring 9005490034000 Jobber Drill Bit 3.4 Mm Hss

Product Description

The GUHRING 9005490034000 is a jobber length twist drill bit designed for precise, repeatable hole-making in metalworking and fabrication applications. Built from high-speed steel with a bright, uncoated finish, it features a parabolic flute geometry and a web-thinned, tapered web configuration that promotes efficient chip evacuation and reduced thrust force. The 130-degree split-point tip provides accurate positioning without a center punch on most materials. Overall length is 2.75 inches with a flute length of 1.53 inches, and the straight-cylindrical shank measures 0.1339 inches in diameter. This bit is sized to 3.4 mm, equivalent to 0.1339 inches decimal, and conforms to DIN 338 standards. It is suited for use in CNC machining centers, drill presses, and hand-held power drills.

This drill bit is rated primarily for aluminum and non-ferrous materials, as indicated by the K, N, and P workpiece material codes, though its high-speed steel construction also handles a range of general-purpose drilling tasks. The Series 549 designation places it in GUHRING's high-performance jobber drill family, conforming to DIN 338 geometry specifications. It ships as a single unit and is appropriate for machine shops, maintenance technicians, and tool cribs requiring small-diameter precision drilling in production or repair environments.

Key Features

• 3.4 mm diameter (0.1339 inches decimal) with a diameter tolerance of -0.018 to 0.000 mm for consistent hole sizing
• Parabolic flute design with web thinning for improved chip flow and reduced cutting resistance
• 130-degree standard point angle for self-centering entry on aluminum and non-ferrous workpieces
• Bright, uncoated high-speed steel construction suitable for general-purpose and light-production drilling
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• Conforms to DIN 338 specification for jobber length geometry

Compatibility

Designed as an OEM-specification replacement or direct-use jobber drill conforming to DIN 338 standards, compatible with any drill press, CNC machining center, or hand-held power tool equipped with a standard chuck accepting a 0.1339-inch straight-cylindrical shank.

Installation Notes

Installation and use should be performed by a machinist or qualified technician familiar with rotating cutting tool safety. Secure the shank fully in the chuck or collet and verify runout before drilling. Power down and de-energize all equipment before changing or inspecting the bit. Follow applicable shop safety standards and manufacturer feed-and-speed guidelines for the specific workpiece material.