This wheel bolt secures the rim to the hub on the host tractor. It is an original AGCO component, machined to the thread and shank dimensions that the hub bore and nut are designed for. A bolt with incorrect thread pitch or shank length will not clamp the rim evenly, leading to wheel wobble and eventual stud fatigue. Using the original bolt preserves the intended clamp load across the wheel mating face. On installation, clean the hub bore and torque the nut to the specification for the tractor model.