90855-ZW9-300 Rivet (4X22.6) - Overview. The 90855-ZW9-300 Rivet (4X22.6) is a precision engineered, small cylindrical fastener designed to provide secure connections within Honda marine engine rigging systems. This rivet plays a crucial role in maintaining the reliability and integrity of assembly points by securing components firmly, which supports optimal mechanical stability and performance. Designed to exact factory specifications, it ensures seamless integration with existing parts, mainta