01A509 - Walter SST+ 9/64-Inch Cobalt Drill Bit for Stainless Steel

High-Performance Drilling with Walter SST+ Technology

The Walter 01A509 9/64" SST+ Drill Bit represents the pinnacle of drilling efficiency for industrial applications. Engineered by Walter Surface Technologies, this tool is specifically designed to overcome the challenges associated with drilling hard, tensile materials such as stainless steel. At the core of its performance is a proprietary blend of cobalt, which significantly enhances the hardness and red-heat resistance of the bit. This allows the SST+ to maintain its cutting edge even under the extreme thermal loads generated during continuous heavy-duty drilling, ensuring a longer service life and consistent hole quality.

Beyond material composition, the geometry of the SST+ bit is a key differentiator. It features a unique "high flow" flute design that is optimized for rapid chip evacuation. In deep hole drilling or when working with gummy materials like aluminum, efficient chip removal is critical to preventing heat buildup and bit breakage. The fully ground body ensures precise concentricity, reducing vibration and wear on both the tool and the drilling machine. Furthermore, the bit is finished with a special bronze SST surface treatment. This coating acts as a lubricant and a heat shield, further reducing friction at the cutting interface and allowing for higher feed rates without compromising the integrity of the bit.

Designed for versatility, this 9/64" bit excels in both portable drilling operations and stationary machine setups. Its robust construction resists torsional stress, making it a reliable choice for maintenance, repair, and operations (MRO) professionals who demand tools that perform reliably in diverse environments. Whether tasked with drilling through mild steel structural components or precision stainless steel sheets, the Walter SST+ delivers accelerated drilling speeds and a lower cost per hole through its exceptional durability.