... B18.2.1,B.S.W916) ,stud bolt,Threaded rods ,U-bolt , T-bolt, carriage bolt(DIN603), anchor bolt(DIN529,IFI136, GB/T799), square head ... (DIN1587), hex flange nuts(DIN6923), hex slotted nuts(DIN935) and so on.WASHER:(M3-M64),include flat washer(DIN125A,DIN9021),spring washer(DIN127),Non-standard ...