Wera: Stainfree with Stainless
According to German toolmaker Wera Tools, much of the corrosion we find in the cross-hairs of our Phillips-head and other stainless-steel fasteners is a result of cross-contamination during the tightening process when traditional, carbon-steel tools are used to secure the fastener. Small bits of the carbon steel are embedded in the fastener, and the particles form galvanic cells that quickly corrode or leave a pit. Solution? Stainless steel tools—the logic being that using stainless on stainless, there will not be any contact corrosion, and therefore no rust.