bolts nuts 1.Bolt No:DIN933,DIN931,DIN934 2.Bolt size:M3- ... .Effect:Connection,Fastening Export bolts nutsProducts Details: Products Name: bolts nuts Size: M3-M22 Standard NO.: DIN933,DIN931,DIN934 Material:: Carbon ... outer thread's main function is to cooperate with the nuts. Using this thread connecting methods, make two parts fucked. • Applications ...