50325-ZVD-300 Clamp Screw - Overview. The 50325-ZVD-300 Clamp Screw is a critical fastening component designed for Honda marine engine systems, particularly used in rigging and accessory assemblies. This clamp screw plays a vital role in securing various parts to ensure reliable operation and enhanced safety in marine applications. Manufactured to meet OEM standards, it supports the structural integrity of the system and maintains precise alignment under marine conditions. Designed for Honda mar