A spindle assembly for a cotton harvester. The spindle assembly includes an elongated nut having a first end with a threaded portion configured for receipt by the spindle bar. The elongated nut also has a second end, opposite the first end, with a tool receiving portion configured to be received by a tool to tighten the threaded portion of the first end into the spindle bar. The elongated nut further has an aperture extending through the elongated nut from the first end to the second end. The spindle assembly also includes a cotton harvester spindle having a bearing portion rotatably supported by the aperture of the elongated nut and a picking end projecting outwardly from the second end of the elongated nut. The elongated nut is hard coat anodized to improve wear resistance.
