... ,M10,M12,1/2",1/4",5/16",3/8"): 1.Material:carbon steel;2.Surface treament:nickel plating,,zinc plating,galvanized,hot dipped and ... ,M12*8mm,M12*9.1mm,M12*11.9mm,1/4",3/8",5/16",1/2" )We hope to receive drawings or physical ... you and we will quote you competitive price asap. hot dipped galvanized spring nut(M6,M8,M10,M12,1/4",3/8",1/2")