The gusset plate is bolted to the column and welded to the beam. These attachment points are bolted or welded. The armored body is bolted together instead of welded, as in other MRAPs. The plates are partly riveted; the superstructure is largely bolted. They must be securely bolted either to the floor or the wall behind. A36 steel is also commonly bolted and riveted in structural applications. Sway braces are bolted to the rack frame. Then the beams can be bolted to the steel columns. Originally these wings were bolted directly to the suspension and were supported by slender struts. The main frames were bolted onto the engine's top quarter. The joints began to become bolted or nailed instead of being mortised and tenoned. It was bolted through the teak to the iron hull. For extra protection, eight vertical steel bars were bolted over the new windscreen. The frame could be bolted together with basic tools. All other components, including the receiver, are bolted directly to this chassis.