90304-ZV5-013 Nut (7/8-14UNF) - Overview. The 90304-ZV5-013 Nut (7/8-14UNF) is an essential component designed for Honda marine engine systems. Serving as a self-locking nut with a 7/8-14 UNF thread size, it plays a critical role in securing components within the marine rigging and accessory assemblies. This nut is manufactured to meet factory specifications to ensure optimal system performance, reliability, and safety in demanding aquatic environments. With precise dimensions and thread engagem