01J032 - Walter #32 Cobalt SST Stub Drill Bit for Stainless Steel

Technical Overview of Walter 01J032 SST Stub Drill

The Walter 01J032 is a #32 size SST Stub Drill Bit engineered for industrial environments requiring precision and durability in hard materials. This tool represents the intersection of advanced metallurgy and geometric optimization, specifically designed to address the challenges of drilling stainless steel, mild steel, and non-ferrous metals. The core of this drill bit is manufactured from a high-grade Cobalt blend. The addition of cobalt to the High-Speed Steel (HSS) matrix significantly increases the tool's "red hardness," allowing it to maintain a sharp cutting edge even at the elevated temperatures generated when drilling high-tensile alloys.

Geometrically, this bit features a "Stub" or screw machine length. Unlike standard jobber length bits, the stub design reduces the overall length and flute length, which drastically increases the torsional rigidity of the tool. This rigidity is critical when drilling sheet metal or when using portable power tools, as it minimizes deflection and vibration—the primary causes of bit breakage. The shorter flute length also aids in rapid chip ejection, preventing clogging in thin materials.

The tip is ground to a precision split point. This self-centering geometry engages the material immediately upon contact, eliminating the "walking" phenomenon common with standard chisel-point bits. This feature removes the necessity for pre-punching or pilot holes, thereby streamlining the fabrication process. Furthermore, the bit is finished with Walter's proprietary Bronze SST surface treatment. This oxide treatment not only provides corrosion resistance but also reduces the coefficient of friction between the bit and the workpiece, lowering heat generation and extending tool life. The 01J032 is an essential component for MRO operations, fabrication shops, and any technical application where hole quality and tool longevity are paramount.