93404-05016-08 Bolt-Washer (5X16) - Overview. The 93404-05016-08 Bolt-Washer (5X16) is an essential fastening component designed specifically for Honda marine engine systems. This bolt-washer combination supports the secure mounting of parts within the Honda marine engine system, ensuring the reliability and safety of various mechanical assemblies. Designed in strict compliance with factory specifications, this part guarantees seamless integration with existing components, maintaining optimal pe