Carriage bolts with square nuts: 1) DIN603 ,ANSI,BSW,ISO, AS,JS ETC. 2) Plain, ... DIN603 bolts: sizesM5 and upfeatureslow carton,high tensile,stailessstandardDIN,ANSI,BSW,AS,JS,ISO,ETC.stypehex bolt,T nut,U bolt,fish bolt,roofing bolt ... presence: ElectronicsHome & Industrial AppliancesIndustrial Tools and MachineriesAutomotiveMedical EquipmentsMilitaryTelecommunications Carriage bolts with square nuts