01A505 - Walter SST+ 5/64-Inch Cobalt Drill Bit for Stainless Steel

Premium Drilling Performance with Walter SST+ Technology

The Walter 01A505 5/64" SST+ Drill Bit is a high-performance cutting tool engineered to meet the rigorous demands of industrial maintenance and metal fabrication. In the world of MRO (Maintenance, Repair, and Operations), efficiency and tool longevity are paramount. Standard high-speed steel bits often fail when confronted with the high tensile strength and work-hardening properties of modern stainless steel alloys. Walter Surface Technologies has addressed this challenge by formulating a unique cobalt blend for the SST+ series. This material composition significantly increases the hot hardness of the bit, allowing the cutting edges to remain sharp even under the extreme thermal loads generated during aggressive drilling operations.

Beyond the metallurgy, the geometry of the 01A505 is designed for productivity. The bit features a "High Flow" flute design, a critical innovation that accelerates chip evacuation. In deep-hole drilling or when working with gummy non-ferrous metals like aluminum, chip packing is a leading cause of heat buildup and eventual bit breakage. The SST+ flute geometry ensures that swarf is ejected efficiently, keeping the cutting zone cooler and cleaner. Additionally, the heavy-duty fully ground body construction guarantees strict concentricity, which is essential for producing accurate, round holes without runout.

To further enhance performance, Walter applies a special Bronze SST surface treatment to the bit. This coating acts as a thermal barrier and reduces the coefficient of friction between the tool and the workpiece. The result is a smoother drilling action that requires less axial force from the operator. Whether utilized in a stationary drill press for precision shop work or a portable drill for on-site repairs, the Walter SST+ 5/64" bit delivers consistent, reliable penetration. It is particularly effective for drilling on curved surfaces, such as pipes and tubing, thanks to its self-centering characteristics which prevent the bit from "walking" upon initial contact.

Key Technical Benefits:

• Cobalt Blend Matrix: Resists heat and wear in hard alloys.
• Bronze SST Coating: Improves lubricity and chip flow.
• Precision Grinding: Ensures tight tolerances and hole accuracy.