Guhring 9003050016100 Cobalt Jobber Drill Bit No 52

Product Description

The GUHRING 9003050016100 is a cobalt jobber-length drill bit sized to No. 52 wire gauge (0.0635 inches decimal equivalent), built for general-purpose drilling in ferrous and hard materials. The bit features a 118-degree standard point angle with web thinning for improved center penetration and reduced thrust. Overall length is 43.00 mm, with a 2-flute regular spiral design and a straight-cylindrical shank. The bright, uncoated finish suits applications where coating buildup is a concern. Licensed machinists, tool-and-die technicians, and maintenance trades rely on this bit for consistent hole quality in tight-tolerance work.

This drill bit is rated for use in cast iron and steel workpieces, making it appropriate for manufacturing, maintenance repair, and fabrication environments. The DIN 338 specification ensures dimensional consistency with standard toolholders and drill chucks. The No. 52 wire-gauge size is commonly needed for tapping operations, clearance holes, and precision drilling tasks where fractional drill sizes are not fine enough. The maximum drilling depth is 0.690 inches (17.59 mm), suitable for typical jobber-length applications in bench drill presses and hand-held drill drivers.

Key Features

• Cobalt construction for elevated heat resistance when drilling steel and cast iron
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• DIN 338 specification — dimensionally consistent with standard chucks and toolholders
• Regular spiral, 2-flute design for efficient chip evacuation in short-depth holes
• Straight-cylindrical shank fits standard 3-jaw drill chucks without adapters
• Bright, uncoated finish — no coating delamination risk in interrupted cuts

Compatibility

Designed as a general-purpose jobber-length drill bit conforming to DIN 338, compatible with any standard drill chuck accepting a 0.0634-inch straight-cylindrical shank. Suitable for use in drill presses, CNC machining centers, and hand-held power drills set up for ferrous materials.

Installation Notes

This drill bit is installed by a machinist or maintenance technician into a 3-jaw drill chuck or collet toolholder. Ensure the workpiece is securely clamped before drilling and that the machine spindle is powered down and locked before bit changes. Use appropriate cutting fluid or coolant for steel applications to extend tool life; this bit does not support through-coolant delivery. Verify chuck capacity accommodates the 0.0634-inch shank diameter before mounting.