90323-ZW1-003 Lock (15/32-32) Nut - Overview. The 90323-ZW1-003 Lock (15/32-32) Nut is a critical component in Honda marine engine systems. This locking nut plays a vital role in securely fastening parts, especially in the propulsion or mechanical assemblies where maintaining tight and reliable connections is crucial for smooth operation. Engineered to meet factory standards, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Speci