Guhring 9005490030500 Jobber Drill Bit Wire 31 Hss

Product Description

The GUHRING 9005490030500 is a jobber length drill bit in wire gauge size 31, measuring 0.1201 inches in diameter. Built from high-speed steel with a bright uncoated finish, it features a 130-degree drill point angle and a parabolic flute geometry designed to improve chip evacuation in demanding materials. The straight-cylindrical shank and web-thinned tip reduce thrust and improve centering accuracy at entry. This is a Series 549 tool conforming to DIN 338 standards, suited for use by machinists, tool and die technicians, and maintenance professionals working in metal fabrication and general industrial environments.

This drill bit is rated for primary workpiece materials including aluminum and similar non-ferrous and short-chipping metals, as classified by material codes K, N, and P. The parabolic flute design at a 5xD flute-to-diameter ratio supports efficient chip flow in through-hole and blind-hole applications. It is a single-piece, individually packaged tool appropriate for both production drilling and precision layout work where a small-diameter, high-performance bit is required.

Key Features

• Wire size 31 diameter at 0.1201 inches with a diameter tolerance of -0.018 to 0.000 mm for consistent hole sizing
• 130-degree drill point angle with web-thinned, tapered web configuration for reduced entry thrust
• Parabolic flute geometry at 5xD ratio promotes efficient chip evacuation in aluminum and similar materials
• Bright uncoated high-speed steel construction rated as high-performance grade
• Straight-cylindrical shank at 0.1201 inches for standard chuck compatibility
• Conforms to DIN 338 specification for jobber length drill bits

Compatibility

Designed as a DIN 338 jobber length drill bit for use in standard drill chucks accepting a 0.1201-inch straight-cylindrical shank, suitable for drilling aluminum, non-ferrous metals, and short-chipping materials classified under material codes K, N, and P.

Installation Notes

Installation and use should be performed by qualified machinists or tool technicians familiar with proper chuck clamping procedures. Ensure the drill press or hand drill is powered off and secured before changing bits. Verify chuck jaw condition and shank seating before operation to prevent runout. Do not exceed the recommended maximum drilling depth of 1.237 inches without retracting to clear chips.