Guhring 9006580034500 Cobalt Drill Bit No 29 Tin

Product Description

The GUHRING 9006580034500 is a cobalt jobber length drill bit in wire gauge size No. 29, corresponding to 0.1358 inches in decimal diameter. It carries a titanium nitride (TiN) coating and is built to Series 658 specifications per DIN 338. The 130-degree split point and web-thinned, tapered web geometry reduce thrust force at entry and improve centering without a center punch. The parabolic flute profile accelerates chip evacuation in deeper holes. This bit is intended for trade and industrial use by machinists, maintenance technicians, and fabricators working with cast iron and steel.

This drill bit is suited for production and maintenance drilling in ferrous materials, specifically cast iron and steel. The straight-cylindrical shank fits standard 3-jaw drill chucks on benchtop drill presses, magnetic drills, and handheld power tools. With a maximum drilling depth of 1.332 inches and an overall length of 2.75 inches, it is appropriate for through-hole and blind-hole work in light to medium plate stock. The DIN 338 jobber length format makes it a direct fit wherever a standard-length drill is specified.

Key Features

• Cobalt high-performance steel construction for increased heat and wear resistance in ferrous materials
• Titanium nitride (TiN) coating extends tool life and reduces friction during cutting
• 130-degree point angle with web thinning improves self-centering and lowers entry thrust
• Parabolic flute geometry promotes efficient chip removal in deep holes up to 1.332 inches
• Straight-cylindrical shank fits standard drill chucks without adapters
• Conforms to DIN 338 jobber length standard for broad machine compatibility

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for applications requiring a No. 29 wire gauge diameter in DIN 338 jobber length format; primary workpiece materials are cast iron and steel per material codes K and P.

Installation Notes

Install in a properly sized drill chuck and verify the shank is fully seated and centered before operation. Power down the drill press or disconnect the tool from power before changing bits. Always operate at the manufacturer-recommended speed for the workpiece material and drill diameter; cobalt bits tolerate higher heat but still require appropriate feed rates to avoid work hardening in steel. Eye protection and proper workholding are required per standard shop safety practice.