90005-ZW9-000 Flange (6X20) Bolt - Overview. The 90005-ZW9-000 Flange (6X20) Bolt is an essential component within Honda marine engine systems. This flange bolt plays a critical role in securely fastening various engine and rigging components, contributing to the reliable operation of the marine engine and associated accessories. Specifically engineered for compatibility with Honda marine products, it ensures seamless integration with existing parts, maintaining optimal performance and durabilit