Steel Hex Nut 1)Standard:DIN,ANSI,ISO, 2)Materials:carbonsteel. Stainless steel .alloy steel . 3)Grade:class 4.8 6.8 8. Steel Hex Nut Size 1/2 ... feet) 5. Finish: Plain, black ,zinc plated, hot dip galvanized.HEX BOLTMaterial: ASTM A193 B7, B8, B8M.Specification: ANSI B18.2 ... 18.2.2WASHER Flat washer and Spring WasherMaterial: Carbon Steel and Stainless Steel.Specification: ASTM F436, ANSI B 18.22.1, ...