90002-ZG5-004 Screw-Washer (4x8) - Overview. The 90002-ZG5-004 Screw-Washer (4x8) is a genuine Honda marine engine rigging component essential for secure fastening within various Honda marine engine systems. This OEM screw-washer is precisely engineered for the rigging and accessory systems of Honda marine engines, ensuring that components remain firmly attached and operational integrity is maintained during marine activities. Designed specifically to match factory specifications and tolerances,