The nut H 27218 is a high-strength fastening component used in critical assemblies of the Sulzer ASL25 engine where secure clamping and long-term stability are essential. Designed to maintain consistent preload under vibration, thermal expansion, and dynamic mechanical loads, this nut ensures reliable retention of associated components. Its precision-machined threads and controlled material properties provide resistance to loosening and fatigue, safeguarding the structural integrity of the assembly. Though compact in size, the H 27218 nut plays a vital role in maintaining dependable engine performance in demanding marine and industrial environments.