01A009A - Walter SST 9/64" Cobalt Jobber Drill Bit with Quick Shank

Technical Overview of the Walter 01A009A SST Drill Bit

The Walter 01A009A is a high-performance 9/64" Jobber length drill bit belonging to the renowned SST series. Engineered for precision and durability, this tool is manufactured from a premium cobalt blend matrix. This material composition provides exceptional hot hardness, allowing the bit to maintain its cutting edge even under the high thermal loads generated when drilling mild steel and non-ferrous metals. The bit features a heavy-duty, fully ground body with a specific back taper geometry designed to minimize friction against the hole walls, thereby reducing heat buildup and preventing binding.

A key technical innovation is the exclusive Quick Shank design. This shank architecture is specifically engineered for compatibility with modern keyless chucks found on cordless power tools, ensuring a positive drive engagement that eliminates shank slippage during high-torque applications. The tip geometry utilizes Walter's "Speed Tip" design, a self-centering point that prevents walking on curved surfaces such as pipes or round stock, eliminating the prerequisite for center punching. Finished with a specialized bronze SST surface treatment, the 01A009A offers reduced coefficient of friction and enhanced wear resistance, making it a superior choice for MRO and industrial fabrication environments.