Standard: DIN, BS, AS, ASTM Grade could be ASTM Gr.1,Gr.2,BS 4,6,8,10,12 Nylon Insert Nut1:We ... produce nuts according to UIC, GOST, GB/TB, DIN, BS, AS, ASTM standard ... America, West Europe, North Europe, Middle Asia, Southeast of Asia. Nylon Insert Nuts