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