01J007 - Walter SST #7 Cobalt Stub Drill Bit for Stainless Steel

High-Performance Walter #7 SST Stub Drill Bit

The Walter #7 SST Stub Drill is engineered for industrial professionals who demand precision and durability in their metalworking tools. Part of Walter's renowned SST series, this drill bit is crafted from a premium cobalt blend that significantly outperforms standard high-speed steel (HSS) bits, particularly when drilling through tough materials like stainless steel and mild steel. The "stub" or screw machine length design features shorter flutes and a compact overall length, which provides unparalleled rigidity. This structural integrity is crucial for minimizing deflection and preventing breakage, especially when applying pressure in difficult drilling positions.

Designed with productivity in mind, the Walter #7 SST Stub Drill features a specialized split point geometry. This self-centering design bites into the material immediately upon contact, eliminating the need for pre-punching and preventing the bit from "walking" across the surface. This is particularly advantageous when drilling into round surfaces or smooth sheet metal. The bit is finished with a unique bronze SST surface treatment, which acts as a lubricant to reduce friction and heat generation, further extending the life of the cutting edge. Whether utilized in a stationary drill press or a portable hand drill, this tool delivers consistent, clean holes with maximum efficiency.

Industrial maintenance and fabrication teams rely on the 01J007 for its ability to withstand high torque and heat. By reducing the frequency of bit changes due to dulling or snapping, this Walter drill bit lowers overall operational costs and downtime. It is an essential component for any MRO toolkit dealing with diverse metal drilling applications.