Guhring 9005490048000 No. 12 Hss Jobber Drill Bit

Product Description

The GUHRING 9005490048000 is a No. 12 wire-size jobber-length drill bit built to DIN 338 standards in high-speed steel (HSS). The bit measures 0.1890 inches in diameter with a 3-3/8 inch overall length and a 2-1/16 inch flute length. The 130-degree split point reduces walking on entry and lowers thrust requirements on harder stock. A parabolic flute geometry improves chip evacuation and allows faster feed rates compared to standard spiral flutes. Web thinning at the tip further reduces cutting resistance. Licensed machinists, tool-and-die professionals, and maintenance technicians reach for this bit when drilling aluminum, non-ferrous metals, and plastics where chip packing is a concern.

The 9005490048000 is catalogued in GUHRING Series 549, a jobber-length parabolic flute line rated primarily for aluminum and non-ferrous workpiece materials (ISO material codes K, N, and P). The straight-cylindrical shank fits standard drill chucks without modification. Maximum drilling depth is 1.7640 inches, making it suitable for through-holes and blind-holes in typical sheet metal, plate, and extrusion work found in fabrication shops, HVAC equipment assembly, and general mechanical maintenance.

Key Features

• DIN 338 specification jobber-length geometry: 3-3/8 inch OAL with 2-1/16 inch flute length
• 130-degree standard point angle with web thinning for reduced entry thrust and less walking
• Parabolic flute profile promotes fast, clean chip evacuation in aluminum and non-ferrous materials
• Bright/uncoated finish — no coating interference on close-tolerance holes
• Tapered web configuration with web-thinned tip for lower cutting forces
• Right-hand cutting direction; 2-flute design for maximum chip clearance

Compatibility

Designed as an OEM-style replacement or stocking drill for any application requiring a No. 12 wire-gauge (0.1890 inch) jobber-length bit with a straight-cylindrical shank meeting DIN 338 tolerances. Primary workpiece materials per manufacturer specification are aluminum, non-ferrous metals, and plastics (ISO codes K, N, P).

Installation Notes

A licensed machinist or qualified maintenance technician should install and operate this bit using a properly rated drill press, CNC machining center, or hand drill with a calibrated chuck. Secure the shank fully in the chuck to the depth recommended by the chuck manufacturer before drilling. Always power down and de-energize the machine before changing tooling. Follow applicable OSHA machine-guarding requirements and wear appropriate eye and hand protection when drilling.