Product Info Catalog Hardware Builders Hardware Connection & Wire Goods U Bolt, #612, Zinc, 5/16 x 1-3/8 x 2-1/2-In. U Bolt, #612, Zinc, 5/16 x 1-3/8 x 2-1/2-In. Request a Quote UPC: 38613125865 SKU: 661546 Model Number: N222-125 5/16" x 1-3/8" x 2-1/2", #612 zinc u-bolt.