A Center Bolt is an essential component of your suspension.
The particular spherical head is designed to fit in the axle seat or block seat, as well as holding the leaf spring pack together.
The torquing of the ubolt is crucial for the suspension's lifespan.
Your vehicle's tracking is determined by centre bolts and stationary Spring Eye Bolts ( driving straight).
Inspect for broken main leafs (eyes) or loose ubolts with a bent or broken centre bolt if you feel or see your rear axles are back or forward.
It's a good idea to replace your ubolts when repairing bent or damaged centre bolts.
https://www.bhallafasteners.com/view/other-fasteners/center-bolts
