Hex Nuts, with their internal machine screw threads, are the most common type of nut in use and are mated with virtually all externally threaded fasteners that have machine screw threads. ProductSiteLaunchDate : 2023-07-23T02:05:49.593Z Size : 5/16-24 SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 31161700