Product Info Catalog Hardware Builders Hardware Connection & Wire Goods U Bolt, #146, Zinc, 1/4 x 1-3/8 x 4-In. U Bolt, #146, Zinc, 1/4 x 1-3/8 x 4-In. Request a Quote UPC: 38613125803 SKU: 661538 Model Number: N222-117 1/4" x 1-3/8" x 4", #146 zinc u-bolt.