These Trailer U Bolts come in a 4 pack and include all the associated hardware, which is 2 Hex Nuts, 2 Lock Washers and 2 Flat Washers for each U Bolt. The U Bolts and Hardware are all hot dipped galvanized, which means they have a thick coating to help prevent corrosion, making them great for use on Land Trailers as well as fresh or saltwater boat trailers.