1)nut and bolt 2>Grade: Q235,202,304,316L 3>Finish: ... , U bolt , T bolt, carriage bolt(DIN603), threaded rod(DIN975), anchor bolt(DIN529,IFI136, GB/T799), square head bolts, expansion bolt ... ), eye bolt (DIN444) and so on. NUT:(M12-45), include spring nut, hex nut(DIN934), cap nut(DIN1587), hex flange nuts(DIN6923), hex slotted ...