Yamaha Clamp, Cable - 6FP-21337-00-00. Reliable Yamaha Clamp for Secure Cable Management. The Yamaha Clamp, Cable - 6FP-21337-00-00 is a high-quality component designed to provide secure cable management for various Yamaha equipment. This clamp ensures that your cables remain firmly in place, preventing potential damage from vibration or movement. Ideal for a variety of Yamaha models, this clamp offers a simple yet effective solution for maintaining organized and efficient wiring.. Key Features.