The Walter #5 SST Stub Drill<\/strong> (SKU: 01J005) represents the pinnacle of drilling performance for industrial applications requiring high rigidity and precision. Part of Walter’s renowned SST+ family, this drill bit is engineered specifically to address the challenges of drilling through tough materials like stainless steel and thin-gauge sheet metal. Unlike standard jobber-length bits, the stub (or screw machine) length design features shorter flutes and a more compact overall profile. This structural difference drastically reduces flexibility in the bit, ensuring that the energy from your drill is transferred directly into the cut without wobbling or deflection.<\/p>\n Manufactured from a premium cobalt blend<\/strong>, this drill bit offers superior heat resistance compared to standard high-speed steel. This is critical when working with work-hardening materials such as stainless steel, where heat buildup can rapidly dull a cutting edge. To further enhance performance, Walter applies their exclusive Bronze SST surface treatment<\/strong>. This specialized coating acts as a lubricant, reducing friction at the cutting interface and facilitating smoother chip evacuation. The result is a tool that cuts faster, stays cooler, and lasts significantly longer between changes.<\/p>\n The geometry of the tip is equally impressive. Featuring a self-centering split point<\/strong>, the Walter #5 SST Stub Drill bites into the material immediately upon contact. This eliminates the need for a center punch and prevents the bit from “walking” or skating across the surface, which is particularly beneficial when drilling into rounded surfaces or pipes. Whether you are operating a stationary drill press or using a portable hand drill in the field, this bit provides the stability and durability needed for professional-grade results.<\/p>\nKey Technical Benefits<\/h3>\n
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