Spindle Nut 3.5K

Designed for 3,500 lb trailer axles, this spindle nut secures the hub assembly in place and maintains proper bearing preload. Precision-threaded for a correct fit on standard 3.5K spindles, it ensures smooth hub rotation and reliable axle performance. Built for durability and dependable use in trailer wheel and bearing assemblies.
Castle nut for #84 and #42 spindles. 1''-14 Threading