What are the brackets, bolts, or bushings that are used to attach the spring and/or air bag to the axle and vehicle frame?

Spring mounts consist of the brackets, bolts, shackles, and bushings used for attaching springs or air bags (for an air ride suspension) to the vehicle frame. During your inspection, check that the spring mounts are secured to the vehicle's frame and axles. Check that no bushings are damaged or missing. Check that there are no broken, loose, or missing bolts or U-bolts.