... .0mm 5>Size:41*41mm,41*25mm NIut and bolt:Specifications:Material:35# 45# steel.40Cr. ... ASME B18.2.1,B.S.W916) ,high strength bolts stud bolt, U bolt , T bolt, carriage bolt ... 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), hex slotted nuts(DIN935) and ...