The screw H 74130 is a precision-engineered fastening element used throughout the Sulzer ASL25 engine to secure components and assemblies under continuous mechanical load. Designed to maintain consistent clamping force despite vibration, thermal cycling, and dynamic stresses, this screw ensures structural stability and correct alignment of connected parts. Its controlled material properties and accurate threading support reliable installation, resistance to loosening, and long service life, making H 74130 a small but essential contributor to overall engine reliability.