90302-ZW4-000 Hex (6Mm) Nut - Overview. The 90302-ZW4-000 Hex (6Mm) Nut is a genuine Honda marine engine hardware component supporting various fastening applications within Honda marine engine systems. Its primary role is to securely fasten components, ensuring structural integrity and optimal operation of the marine engine assemblies. Crafted to Honda's exacting manufacture standards, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Featu