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DURA-CON Corrosion Resistant Fasteners
DURA-CON Fasteners employ a three layer coating system that consists of an inorganic zinc-rich first coat and an aluminum-rich organic second coat. Grade 5 bolts are stronger than A307 zinc, hot dip galvanized or 300 series stainless steel bolts. DURA-CON coating provides superior corrosion resistance; withstanding 1500 hours of Salt Spray per ASTM B-117.