Hexagonal Head Screw 156354

Hexagonal Head Screw (Part No.: 156354)

The hexagonal head screw (Part No. 156354) is a critical fastening component in gas engines, designed to secure high-stress parts such as cylinder heads, manifolds, or structural covers. Its primary function is to ensure a reliable, leak-proof, and vibration-resistant connection under extreme thermal and mechanical loads.

To use, the screw must be installed with a calibrated torque wrench following specific tightening sequence and torque values, often in multiple stages (e.g., initial torque + angle tightening). Proper lubrication of threads is recommended to achieve accurate preload. After extended operation, retorquing may be required during maintenance.

This screw plays a key role in maintaining engine integrity, preventing gas or fluid leaks, and ensuring long-term operational safety and efficiency.