Outfit your truck or trailer to be Ready for the Road Ahead™ with secure axles, with the Stemco 3-1/4"-12 Pro-Torq® Axle Spindle Nut with Lock. With an advanced design, this replacement nut locks the axle in place while maintaining the wheel bearing preload, and tolerating intense amounts of torque from large-sized vehicles. Manufactured with exact measurements and enhanced durability to provide easy installation with a socket on front and rear axles. FleetPride is your First Click in Heavy Duty®.