01K009 - Walter SST+ 9/64 Inch Double-Ended Cobalt Stub Drill Bit

Industrial Grade Drilling Precision

The Walter 01K009 9/64" SST+ Double-Ended Stub Drill represents the pinnacle of efficiency for industrial maintenance and fabrication environments. Engineered by Walter Surface Technologies, this drill bit is specifically designed to address the common challenges associated with drilling thin materials and sheet metal. Unlike standard jobber length bits that can flex and wander, the stub length geometry of this bit provides exceptional rigidity, ensuring precise hole placement and significantly reducing the risk of breakage under torque.

At the core of this tool is a proprietary Cobalt HSS alloy blend. This high-performance material composition allows the bit to maintain hardness and cutting edge integrity even at elevated temperatures, outperforming standard black oxide bits by a wide margin. The bit features Walter's exclusive SST surface treatment, which utilizes a bronze-colored oxide to enhance lubricity. This treatment facilitates smoother chip flow and reduces friction, thereby lowering heat generation during the drilling process—a critical factor in extending tool life.

For MRO operations, the double-ended design is a major cost-saving feature. When one end eventually dulls, the user simply flips the bit to utilize a fresh cutting edge, effectively doubling the tool's lifespan per unit. The self-centering point geometry eliminates the need for pre-punching, streamlining workflow and increasing productivity. Whether used in automotive repair, HVAC fabrication, or general aerospace maintenance, the Walter 01K009 delivers reliable, high-speed performance on steel, stainless steel, and aluminum.