Square Nut Size: M6--M36 Grade: 4,5,6,8,10,12 Materials: carbon and alloy steel Hot Dip Galvanized ... , JIS, AS,BS, EN, SAE,ASTM3.GradeGr.2,5,8,10, 2H, DH, /8/4.ThreadUNC, UNF, UNEF, M, BSW, BSF, TR ... steel(303,304,304L,316,316L),Brass(H59,H62)6.Size1/4"-7/8"7.FinishPlain, Zinc plated,Passivated, Nickel plated, H ...