... , 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 or other specifications required by customers ... .2:Grade could be ASTM Gr.1,Gr.2,2H ,BS 4,6,8,10,12,3 ... :Size from 1/2 to1-3/8;M10 to ...