Shoulder nut eye bolts are not quite as common as regular nut eye bolts. Their shoulder makes them ideal, however, for flush mount applications. These shoulder eye bolts, from Chicago, are made from forged steel in Chicago, IL (right here in the U.S.A.). They are heat-treated and feature a hot galvanized finish. Their Working Load Limit is based on a safety factor of 5:1 for straight, in-line loading. Angular loading should be avoided as it reduces the Working Load Limit.