7843-4004723
Spindle Nut - Zip Torq
Mack

Spindle Nut - Zip Torq is a high-precision wheel-end fastener designed to provide consistent preload and reduce the risk of loosening under dynamic loading. The Zip Torq system employs a dedicated torque sequence and locking features to ensure the nut maintains the correct clamping force through vibration and temperature changes. Used in the wheel hub assembly, this nut helps preserve bearing preload, prevents fretting, and minimizes the likelihood of hub movement that could compromise alignment or seal performance. The unit is engineered for easy installation with compatible tools and mating components, promoting faster service with reliable results. Regular inspection of the nut and related hardware is advised during wheel maintenance cycles. Available through Source One Parts Center.