Guhring 9005520076700 Drill Bit 0.302in Hss Series 552

Product Description

The GUHRING 9005520076700 is a stub-length, screw machine drill bit engineered for high-performance drilling in aluminum and other non-ferrous workpiece materials. Built to DIN 1897 standards, this bit measures 0.302 inches (Letter N) in diameter with an overall length of 3.125 inches and a flute length of 1.4375 inches. The parabolic flute geometry and web-thinned point promote efficient chip evacuation and reduced thrust during short-hole drilling. High speed steel construction with a bright, uncoated finish makes this a reliable choice for production and maintenance drilling environments where consistent tolerances are critical.

This Series 552 stub drill is suited for screw machine operations, CNC drill presses, and hand-held industrial drilling setups where a shorter flute length provides increased rigidity and better hole location accuracy. Its 130-degree point angle is optimized for aluminum as the primary workpiece material, reducing walking and improving entry geometry on softer metals. Machinists, tool-and-die technicians, and maintenance mechanics working in production shops or job-site environments will find this bit appropriate for through-holes and shallow blind holes up to a maximum drilling depth of 1.004 inches.

Key Features

• DIN 1897 stub length for improved rigidity and reduced deflection in short-hole applications
• Parabolic flute geometry with parallel web configuration promotes fast chip evacuation
• Web-thinned point reduces axial thrust and improves center starting accuracy
• 130-degree point angle optimized for aluminum and non-ferrous workpiece materials
• Straight-cylindrical shank fits standard drill chucks without a reducer
• Bright, uncoated high speed steel finish allows easy visual inspection of tool wear

Compatibility

Designed as a DIN 1897-compliant stub drill replacement for applications requiring a 0.302-inch (Letter N) diameter bit with a straight-cylindrical shank in standard drill chuck toolholders.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance mechanics familiar with rotary cutting tools and machine tool operation. Always confirm the drill press or CNC spindle is fully de-energized and locked out before changing tooling. Secure the straight-cylindrical shank firmly in a properly sized drill chuck to the machine manufacturer's specified clamping torque and inspect the shank and flutes for damage before each use. Cutting speeds and feeds should be selected according to workpiece material and machine capability per applicable shop standards.