25157086
Bolt
Mack

A bolt is a high-strength fastener used to secure critical components in engine, suspension, and chassis assemblies of heavy-duty trucks. This fastener provides a robust clamp load that maintains joint integrity under vibration, torque, and dynamic loading typical of commercial fleets. Selection of the correct bolt involves considering material grade, coating, thread pitch, and length to match the mating parts and service environment. When installed with compatible nuts, washers, and thread lubrication per spec, the bolt resists loosening, galling, and fatigue over time. Regular inspection for signs of stretching, corrosion, or thread damage helps prevent unexpected failures on the road. In service, these bolts enable precise alignment and preload, which are essential for consistent performance and safe handling. Proper torque, sequential tightening, and restart checks are part of good maintenance practice. This part is a dependable, replaceable fastener that contributes to overall vehicle reliability and uptime. Source One Parts Center.