Walter SST+ 23/64 Inch Cobalt Drill Bit for Stainless Steel

Heavy-Duty Cobalt Drill Bit for Stainless Steel

For welders and fabricators, the quality of a hole often dictates the quality of the subsequent fit-up and weld. The Walter 01A523 23/64" SST+ Drill Bit is designed to meet the rigorous demands of the metalworking industry. At its core, this bit utilizes a cobalt alloy formulation that provides superior red hardness. This allows the bit to withstand the high temperatures generated when drilling through work-hardening materials such as stainless steel series 300 and 400, as well as other hard alloys. The inclusion of cobalt ensures that the cutting lips remain sharp, reducing the frequency of bit changes and sharpening downtime.

Precision is paramount in fabrication, and the SST+ addresses this with a 135-degree split point geometry. Unlike standard 118-degree points that can wander or "walk" across the surface before penetrating, the split point bites into the metal immediately upon contact. This self-centering action eliminates the need for a center punch in many applications, saving time and improving accuracy. The bit is also designed with a robust web thickness that adds rigidity, preventing the flexing and chattering that can lead to oval-shaped holes or broken tools.

In addition to its geometric advantages, the Walter SST+ features a specialized bronze surface treatment. This tempering process relieves internal stresses within the metal and creates a lubricious surface that aids in smooth cutting. It is versatile enough for use in stationary drill presses where rigidity is high, as well as in portable drilling applications common in field repairs. With the ability to drill more holes per bit compared to standard alternatives, the Walter 23/64" SST+ represents a cost-effective investment for any serious welding or fabrication shop looking to optimize their tooling inventory.