Walter SST+ 3/8-Inch Cobalt Drill Bit for Stainless Steel

Reliable Performance for Fabricators

For professional welders and fabricators, hole preparation is a critical step in the assembly process. The Walter 01A524 3/8" SST+ Drill Bit provides the bite and durability needed to prepare metal for welding, bolting, or riveting. Constructed from a high-performance cobalt blend, this bit is tailored to cut through work-hardening materials such as stainless steel without overheating or losing its temper. This makes it an indispensable tool for shops that handle a mix of structural steel and exotic alloys.

One of the most frustrating aspects of drilling metal is bit wandering, especially on curved surfaces like pipes and tubing. The Walter SST+ features a self-centering geometry that bites immediately upon contact, allowing for precise hole placement without the need for a center punch in many cases. This is particularly beneficial for welders working on fit-ups or installing drainage holes in complex assemblies. The "High Flow" flute design ensures that metal shavings are cleared instantly, keeping the cutting path visible and clean.

Durability is paramount in a welding environment. The bronze SST surface treatment reduces friction, allowing the bit to glide through aluminum and mild steel with less force. This coating, combined with the bit's heavy-duty body, prevents snapping even under the lateral pressure often applied during hand drilling. Equip your shop with the Walter 01A524 to ensure that every hole is drilled quickly, cleanly, and accurately, keeping your fabrication projects on schedule.