AXLE SPINDLE NUT ASSEMBLY FOR HEAVY-DUTY VEHICLES

摘要

An axle spindle nut assembly secures a wheel end assembly (52) on an axle spindle. (50) The wheel end assembly includes outboard (56) and inboard (54) bearings that are immovably mounted on the axle spindle, and a wheel hub which is rotatably mounting on the bearings. The spindle nut assembly (250) includes a nut (252) that threads onto an outboard end of the axle spindle, and is tightened against the outboard bearing to a predetermined torque level. The nut includes an outboard surface (260) that is formed with a plurality of features (272). A washer (274) is formed with a tab (282) that engages a keyway (196) of the axle spindle outboardly of the nut, and with a plurality of mating features (286) that mechanically engage the features formed in the outboard surface of the nut when the washer is secured to the nut, to reduce rotation of the nut after it has been tightened to a predetermined torque level.