Yamaha Clamp - 90464-16801-00. Reliable Yamaha Clamp for Secure and Durable Performance. The Yamaha Clamp - 90464-16801-00 is engineered to securely fasten critical components in your Yamaha equipment, ensuring they stay in place under tough conditions. Whether used in routine maintenance or during repairs, this clamp provides the reliability and stability your Yamaha products need for consistent performance.. Key Features. Durability: Made from high-quality materials, the Yamaha Clamp - 90464-1