Buckhorn seed box panhead screws are used to attach several items to the seed box container. Three panhead screws are needed to attach one rail for the sliding discharge door; there are three total rails for the sliding discharge door. Two panhead screws are required to attach one runner bracket; there are four total brackets. One panhead screw is needed to attach the side discharge door latch. One panhead screw is needed to attach one ring latch; there are a total of six ring latches on the seed box container.