... SizeM8-M487.FinishPlain, Zinc plated,Passivated, Nickel plated, H.D.G., Black Oxided, Dacromet,Geomet,etc8.Production TechniqueCold forming, ... we can offer?1.NameHex nut, Coupling nut, Nylon lock nut, Spring lock nut, Square nut,Wing nut,etc2.StandardDIN, IFI, ... SizeM5-M1007.FinishPlain, Zinc plated,Passivated, Nickel plated, H.D.G., Black Oxided, Dacromet,Geomet,etc8.Production TechniqueCold forming, ...