90302-ZW4-000AH Nut (M6) - Overview. The 90302-ZW4-000AH Nut (M6) is a precision-engineered fastening component supporting the rigging and accessory systems in Honda marine engine systems. This genuine Honda nut ensures secure connections within various assemblies, providing reliable mechanical fastening essential to maintaining system integrity and operational consistency. Meeting strict factory specifications for dimensions and tolerances, it ensures seamless integration with existing parts, m