01C506 - Walter SST+ Letter F Cobalt Drill Bit (0.2570")

Industrial Grade Letter "F" Drilling Solution

The Walter Surface Technologies 01C506 is a premium Letter "F" (0.2570 inch) drill bit from the renowned SST+ series, engineered to tackle the toughest industrial drilling applications. Designed for maintenance, repair, and operations (MRO) professionals who demand reliability, this bit features a proprietary cobalt blend that significantly enhances hardness and heat resistance. Unlike standard high-speed steel bits that dull quickly when facing work-hardening materials like stainless steel, the SST+ maintains its cutting edge longer, reducing downtime and tool replacement costs.

Precision is paramount in metal fabrication, and the 01C506 delivers with its exclusive "Speed Tip" design. This self-centering 135-degree split point bites into the material immediately upon contact, eliminating the common issue of "walking" or wandering across the workpiece. This feature removes the necessity for pre-punching center marks, streamlining the workflow in high-volume production environments. The heavy-duty, fully ground body construction ensures the bit remains rigid and true, producing perfectly round holes with tight tolerances.

Heat management is critical when drilling hard alloys. Walter has integrated a "High Flow" flute geometry into this bit, which rapidly evacuates metal chips from the hole. This prevents chip packing and heat buildup—the primary causes of premature bit failure. Additionally, the specialized bronze SST surface treatment acts as a lubricant, reducing friction between the bit and the sidewalls of the hole. Whether used in a stationary drill press or a portable hand drill, the Walter Letter F SST+ bit provides consistent, high-performance results across mild steel, non-ferrous metals, and stainless steel.