1)nut and bolt 2>Grade: Q235,202,304,316L 3> ... 5-3.0mm 5>Size:41*41mm,41*25mm NIut and bolt:Specifications:Material:35# 45# steel.40Cr.35Crmo. ... rod(DIN975), anchor bolt(DIN529,IFI136, GB/T799), square head bolts, expansion bolt(ANSI,BS,DIN), eye bolt (DIN444) and so on. NUT ... :(M12-45), include spring nut, hex nut(DIN934), cap nut(DIN1587), hex flange nuts(DIN6923), ...