90202-ZV4-000 Nut, Lock (27Mm) - Overview. The 90202-ZV4-000 Nut, Lock (27MM) is an essential fastening component designed for Honda marine engine systems. This lock nut plays a critical role in securing parts within the marine rigging and accessory systems, ensuring components remain tightly fastened under marine operating conditions. With precise design and manufacturing to match factory specifications, this part ensures seamless integration with existing parts, maintaining optimal performance