01A515 - Walter SST+ 15/64 Inch Cobalt Drill Bit for Stainless Steel

High-Performance Drilling Precision

The Walter 01A515 15/64" SST+ Drill Bit is engineered to define the standard for industrial drilling performance. Manufactured by Walter Surface Technologies, this tool is crafted from a proprietary cobalt blend that provides exceptional hardness and heat resistance. This material composition allows the bit to maintain its cutting edge even when subjected to the high temperatures generated during the drilling of tough materials such as stainless steel and other hard alloys. The heavy-duty, fully ground body construction ensures that the bit remains rigid and true, delivering precise holes with every rotation.

A key technological advancement in the SST+ series is the "High Flow" flute design. This geometry is specifically optimized to evacuate chips rapidly from the hole. Efficient chip removal is critical in preventing heat accumulation, which is the primary cause of premature tool failure. By keeping the cutting zone cooler, the SST+ bit sustains its performance over a longer lifespan. Additionally, the bit features a specialized bronze SST surface treatment. This unique coating acts as a lubricant to reduce friction between the bit and the workpiece, resulting in smoother cuts and reduced wear on the tool's margins.

Precision is further enhanced by the 135-degree split point geometry. Unlike conventional 118-degree points that tend to wander upon contact, the SST+ split point self-centers immediately. This feature eliminates the need for pre-punching or pilot holes, even when drilling on curved surfaces like pipes or tubing. Whether utilized in a stationary drill press for repetitive fabrication or a portable drill for on-site maintenance, the Walter 15/64" SST+ Drill Bit delivers consistent, reliable results that professionals trust for their most critical applications.