ACORN INTERNATIONAL SW-MM121G250 Screw, 12 x 1, Steel

Are these self tapers for metal to metal? Putting r panel on side of building to c perlins, Will these work

Are these stainless steel, galvanized steel, etc..? Also, what is the quantity ?

Are the rubber washers epdm or neoprene

Are these stainless steel, galvanized steel, etc..? Also, what is the quantity?