Walter 21/64 Inch SST Cobalt Jobber Drill Bit with Quick Shank

Precision Fabrication with Walter 01A021 SST Drill Bits

For welders and metal fabricators, hole preparation is a critical step that sets the stage for assembly and finishing. The Walter 01A021 21/64" SST Jobber Drill Bit is designed to meet the rigorous demands of the metalworking industry. Manufactured from a premium cobalt blend, this bit is specifically formulated to withstand the high temperatures generated when drilling through tough materials. While it excels in mild steel and non-ferrous metals like aluminum, its robust construction also makes it suitable for drilling through multiple layers of metal, a common scenario in structural fabrication and sheet metal work.

The geometry of the Walter SST bit is optimized for speed and accuracy. The heavy-duty fully ground body features a bronze SST surface treatment that aids in chip evacuation and reduces galling. This is complemented by the "Speed Tip," a self-centering point that penetrates materials effortlessly. For fabricators, this means you can achieve precise hole placement without the extra step of using a center punch. The aggressive cutting action is balanced by a back-tapered design, which minimizes contact between the bit body and the hole wall. This reduction in friction is crucial for maintaining the temper of the bit and preventing work-hardening of the material being drilled.

Perhaps the most practical innovation for the daily user is the Quick Shank technology. In a busy shop environment, time spent re-tightening a slipping bit is time lost. The Quick Shank features engineered flats that lock securely into the jaws of your drill chuck, ensuring zero slippage even under heavy load. This feature is compatible with both keyed and keyless chucks, making it a universal solution for your tool arsenal. Furthermore, the bit is designed to be highly efficient with cordless power tools, maximizing the energy transfer and allowing for extended runtime on battery-operated drills. When precision, speed, and reliability are non-negotiable, the Walter 01A021 SST Jobber Drill Bit delivers professional-grade results.