The self-locking nut K 72150 is a precision fastening element designed for use with threaded pin K 72148 in the Sulzer ZV40/48 engine, ensuring secure and vibration-resistant connections within critical assemblies. Engineered with an integrated locking mechanism, it maintains consistent clamping force even under dynamic loads, thermal expansion, and continuous vibration. This prevents loosening during operation, safeguarding the structural integrity of the connected components. Manufactured from high-strength materials with precise threading, the K 72150 nut delivers reliable performance, long service life, and enhanced operational safety in demanding marine and industrial environments.