... steel,Stainless steel Specification of our nut: 1.NameDIN985 Hex nylon lock nut2.StandardDIN, IFI, ISO, JIS ... 2H, DH, /8/4.ThreadUNC, UNF, UNEF, M, BSW, BSF, TR, ACME, NPT 5.MaterialCarbon steel ... nuts we can offer?1.NameHex nut, Coupling nut, Nylon lock nut, Spring lock nut, Square nut,Wing nut,etc2.StandardDIN, IFI, ISO, ... 2H, DH, /8/4.ThreadUNC, UNF, UNEF, M, BSW, BSF, TR, ACME, NPT 5.MaterialCarbon ...