90305-ZZ3-A41 Nylon (5mm) Nut - Overview. The 90305-ZZ3-A41 Nylon (5mm) Nut is an essential fastening component used in Honda marine engine systems. It plays a critical role in securely fastening lightweight connections within the rigging and accessory assemblies to ensure reliability and safety of marine equipment. Designed as a precision OEM part, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM Honda nylon nut desi