Walter SST+ #31 Cobalt Stub Drill Bit for Sheet Metal

Stop Breaking Bits on Tough Sheet Metal Jobs

Every welder knows the frustration of snapping a drill bit halfway through a job, especially when working with thin sheet metal or hard stainless steel. The Walter #31 SST Stub Drill (01J031) is the solution to that headache. Designed specifically for the demands of metal fabrication, this "stub" style bit is shorter and thicker-cored than your average drill bit. This extra sturdiness means it can handle the twisting and pressure of hand-held drilling without snapping, saving you money on replacements and keeping your project moving forward.

What makes this bit truly stand out is its cobalt blend construction. If you frequently drill into stainless steel or other hard metals, you need a bit that can take the heat. The cobalt alloy in this Walter bit resists high temperatures, keeping the cutting edge sharp long after standard bits would have dulled and burned out. It cuts faster and lasts longer, allowing you to drill more holes per bit. The special bronze coating helps chips slide out of the hole easily, preventing clogging and overheating, which is often the silent killer of drill bits.

Accuracy is key when you are prepping a piece for welding or riveting. The Walter SST Stub Drill features a split point tip that centers itself the moment it touches the metal. You won't need to waste time grabbing a center punch or worrying about the bit skating across your fresh finish. It grabs, cuts, and finishes clean. Whether you are drilling out rivets, prepping holes for plug welds, or installing hardware, this #31 size bit (0.1200 inch) is a reliable workhorse for your toolbox. It is built to withstand the rigors of daily shop use and portable site work alike.