Standard:DIN, BS, AS, ASTM Slotted Nut:1:We produce nuts according to UIC, GOST, GB/TB, DIN, BS, AS, ASTM standard or other ... specifications required by customers.2:Grade could be ASTM Gr.1,Gr.2,2H ,BS 4,6,8,10 ... , West Europe, North Europe, Middle Asia, Southeast of Asia. Slotted Nut