90121-ZV0-010 Flange (6X25) bolt - Overview. The 90121-ZV0-010 Flange (6X25) Bolt is a critical component within Honda marine engine systems. It serves to securely fasten parts, particularly in the rigging and accessories system, supporting the engine's mechanical stability and reliability. Made to OEM standards, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Flange bolt measuring 6mm in diameter and 25mm in length, designed sp