Stainless steel fasteners should be used for doors windows and exposed stuff. Stainless steel is not just one quality. Do you buy the “big box store” quality or professional quality considering we are in a highly corrosive environment. I learned that Tapcon screws are stainless steel, 410 stainless steel quality which gives these concrete screws superior rust resistance. Also I learned Fastenal fasteners are superior quality. Rebar can have coating to prevent rust and spalling. What is the difference in…