Autobolt is a DOMESTIC Bolt Manufacturer meeting the demands of Markets demands of markets including Industrial Production, Military and DFARs Requirements, Agricultural Equipment, Commercial Solar Installations, Truck Trailers and Heavy Equipment. Specializing in Diameters from ½” (M12) to 1 1/8” (M27) and lengths to 12” (300mm). More than 70 years of DOMESTIC Bolt Manufacturing.