Equip your truck with proper alignment and increased safety for the road ahead, with the OTR 7/8" U-Bolt Hi-Nut with Expertise Built In. By securing the leaf spring directly to the axle, this replacement nut maintains the proper alignment and weight distribution of vehicles, trailers, and cargo mounts. Built with high-strength metal for augmented durability and resistance to extreme torque. FleetPride is your First Click in Heavy Duty.