01B515 - Walter SST+ Cobalt Drill Bit #15 Wire Gauge

Industrial-Grade Precision with Walter SST+ Technology

The Walter #15 SST+ Jobber Drill Bit (SKU: 01B515) represents the pinnacle of drilling technology for industrial maintenance, repair, and fabrication environments. Designed by Walter Surface Technologies, this bit is engineered to overcome the common challenges associated with drilling hard, high-tensile materials such as stainless steel and other ferrous alloys. At the core of its performance is a proprietary cobalt blend substrate. Unlike standard high-speed steel (HSS) bits that soften and dull rapidly under high heat, the cobalt-enriched matrix of the SST+ series maintains its hardness at elevated temperatures, ensuring a significantly longer service life even in the most demanding applications.

Precision is paramount in professional machining and assembly. The #15 wire gauge size (0.1800 inches) is manufactured to strict tolerances, ensuring accurate hole dimensions for tapping, riveting, or clearance fitments. The drill features Walter’s exclusive "Speed Tip" geometry. This self-centering point design bites into the material immediately upon contact, eliminating the wandering or "walking" often seen with standard chisel-point bits. This feature removes the necessity for pre-drilling with a center punch, thereby streamlining workflow and increasing productivity on the shop floor.

Thermal management is critical when drilling work-hardening materials like stainless steel. The SST+ bit addresses this with a unique back-tapered body and a "High Flow" flute design. The back taper reduces the surface area of the bit that contacts the hole walls, minimizing friction and heat generation. Simultaneously, the specialized flute geometry accelerates chip evacuation, preventing chip packing that can lead to bit breakage. Finished with a distinctive bronze SST surface treatment, this drill bit resists chip welding and further enhances lubricity. For MRO professionals seeking reliability and efficiency, the Walter 01B515 is the superior choice.