Product Info Catalog Hardware Builders Hardware Connection & Wire Goods 9/16x2-1/2x8 SQ U Bolt 9/16x2-1/2x8 SQ U Bolt Request a Quote UPC: 758081001460 SKU: 132282 Model Number: S146 9/16" x 2-1/2" x 8", Steel, Square U Bolt, Use For Marinas, Farming Equipment, & Agricultural.