90010-ZY6-030 Flange (6X27) Bolt - Overview. The 90010-ZY6-030 Flange (6X27) Bolt is a critical fastening component used primarily in Honda marine engine systems. This bolt supports the secure assembly of various engine parts, ensuring the equipment operates reliably in demanding marine environments. Designed to match Honda's exact specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. This flange bolt measures 6mm in d