... spring nut: 1.Material:Carbon Steel; 2.Surface:Hot Dipped Galvanized; 3.Good price and quality; Metal stamping part ... ,M8,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 so on;3 ... *9.1mm,M12*11.9mm,1/4",3/8",5/16",1/2" )We hope to receive drawings or ...