01D620 - Walter SST+ 12mm Cobalt Drill Bit for Stainless Steel & Hard Metals

Premium Performance for Industrial Drilling

The Walter 01D620 12.00mm SST+ Drill Bit represents the pinnacle of drilling technology for maintenance, repair, and operations (MRO) professionals. Designed to tackle the most demanding materials found in industrial environments, this drill bit is engineered with a proprietary cobalt blend that provides exceptional hardness and heat resistance. Unlike standard high-speed steel bits that can quickly dull or burn out when facing tough alloys, the SST+ series maintains its cutting edge longer, ensuring consistent performance shift after shift.

One of the standout features of this tool is its "High Flow" flute design. In industrial drilling, chip evacuation is critical; if debris clogs the hole, heat builds up rapidly, leading to tool failure and poor hole quality. The SST+ flutes are geometrically optimized to channel chips away from the cutting tip with maximum efficiency. This not only keeps the bit cooler but also allows for faster drilling speeds, significantly improving productivity on the shop floor. Coupled with a back-tapered body, the design minimizes contact between the bit and the sidewalls of the hole, further reducing friction and the risk of binding.

The surface of the bit is treated with Walter's exclusive Bronze SST coating. This treatment acts as a lubricant and a shield, reducing the coefficient of friction as the bit penetrates the material. This is particularly beneficial when drilling deep holes or working with materials that tend to gall or seize. Whether you are drilling into mild steel, non-ferrous metals, or challenging stainless steel grades, the Walter 01D620 delivers precise, round holes with minimal burr formation.

Versatility is key in MRO settings, and the SST+ delivers. It is robust enough for stationary drill presses yet designed to optimize the power of portable hand drills. Its self-centering capability means operators can start holes accurately on round surfaces—such as pipes or shafts—without the need for a center punch. This saves time and reduces the margin for error in critical repair tasks. For professionals who demand reliability and speed, the Walter SST+ 12.00mm drill bit is an essential component of the tool crib.