Walter SST 31/64" Cobalt Drill Bit with Quick Shank

Precision Drilling with Walter Cobalt Technology

For professional welders and fabricators, the Walter 31/64" SST Jobber Drill Bit represents the pinnacle of drilling performance. This bit is not just a cutting tool; it is a precision instrument manufactured from a high-grade cobalt blend. This material composition provides exceptional hardness and heat resistance, allowing the bit to maintain its cutting edge even under the thermal stress of drilling structural steel and other tough alloys. The 31/64" size is ideal for creating clearance holes for 1/2" bolts or tapping applications where precision is paramount.

One of the most common issues in metalworking is the drill bit spinning inside the chuck. Walter solves this with their proprietary Quick Shank technology. The shank is machined with flats that engage the chuck jaws securely, ensuring 100% power transmission from the drill motor to the cutting edge. This is particularly beneficial when using hand drills where stability can be a challenge. Additionally, the 135-degree split point (Speed Tip) allows for aggressive penetration with less feed pressure, reducing operator fatigue and increasing productivity.

The geometry of the Walter SST bit is designed for versatility. It excels at drilling round surfaces, such as pipes and tubing, thanks to its non-slip tip. The back-tapered design minimizes contact between the bit body and the hole wall, preventing binding and breakage. Finished with a distinctive bronze surface treatment, this bit resists corrosion and reduces friction. When you need a reliable, long-lasting drill bit that delivers consistent results in the shop or on the job site, trust the Walter SST series.