Guhring 9005490012000 Jobber Drill Bit 1.2 Mm Hss

Product Description

The GUHRING 9005490012000 is a jobber length twist drill bit designed for precision drilling in light-alloy and non-ferrous applications. Built from high speed steel with a bright, uncoated finish, it measures 1.2 mm in diameter with an overall length of 38.00 mm (1-1/2 inches) and a flute length of 16.00 mm (5/8 inch). The 130-degree split point and parabolic flute geometry promote clean entry and efficient chip evacuation. Conforming to DIN 338 standards, this bit carries a high-performance grade designation and is suited for production drilling environments where consistent tolerances are required. Diameter tolerance is held to -0.014 to 0.000 mm for repeatable fitment.

This drill bit is specified for use in aluminum, plastics, and similar non-ferrous and thermoplastic workpiece materials (material codes K, N, P). The straight-cylindrical shank seats directly into standard drill chucks and collet holders without adapters. The web-thinned, tapered-web construction reduces thrust load at entry, making it well suited for CNC machining centers, drill presses, and hand-held power tools in production and maintenance settings. It is sold individually but carries a minimum order quantity of 10 units per purchase.

Key Features

• 1.2 mm diameter with tight tolerance of -0.014 to 0.000 mm for consistent hole quality
• 130-degree standard point angle with web thinning for reduced entry thrust
• Parabolic flute geometry improves chip flow and helps prevent packing in deep holes
• High speed steel construction with bright uncoated finish for general-purpose use
• DIN 338 compliant, Series 549, high-performance grade designation
• Straight-cylindrical shank fits standard chucks and collets without modification

Compatibility

Designed as an OEM-style jobber length drill bit conforming to DIN 338 for use in standard drill chucks and collet systems accepting a 0.0472-inch (1.2 mm) straight shank. Primary workpiece materials are aluminum, non-ferrous metals, and plastics.

Installation Notes

Installation and use should be performed by machinists or qualified trade professionals familiar with rotating cutting tools. Secure the shank fully in the chuck or collet and verify runout before drilling. Always power down and lock out the machine before changing bits. Do not exceed the recommended maximum drilling depth of 14.20 mm (0.559 inch) without pecking cycles to clear chips and prevent bit deflection.