Extensive testing and field use have proven the superiority of fluoropolymer coated fasteners. Previously, hot dipped galvanized, cadmium or zinc plated fasteners were considered the standard. But these coatings could not stand up to the corrosive atmospheres prevalent in many industries. After 2,000 hours of salt spray testing (ASTM B117), fasteners coated with these conventional methods showed severe corrosion and in some cases failure. Fasteners coated with PTFE fluoropolymer coating withstood these harsh conditions with no noticeable deterioration. Even after as many as 4,000 hours, the coated fasteners could easily be disassembled.