... Hex bolt 1.Bolt No:DIN933,DIN931,DIN934 2.Bolt size:M3-M22 3.Bolt material:Carbon steel 4.Bolt effect:Connection,Fastening Export Hex bolt ... the customers1.About HEX BOLT • Effect:Hex bolt is most widely used kind of bolts, it has the outer thread's main function ... is to cooperate with the nuts. Using this thread connecting methods, make two parts fucked. • Applications:main service ...