A coating developer says the specification of its Magni 565 coating has been approved for use on ASTM A490 high strength structural bolts. Magni’s 565 (ASTM F2833 Grade 1) zinc-rich base coat and aluminum organic-inorganic composition qualifies for A490s. Magni 565 is the only approved nonchrome, zinc-rich-inorganic coating approved to ASTM 490. Magni 565 passed…