Abstract: A crate fastener and retainer assembly includes a fastener for assembling two adjacent panels of a box or crate, and a retainer for securing the fastener to a panel. L-shaped fasteners assemble two adjacent cleated panels or slotted panels, and retainers mounted on the panel or cleat secure the fasteners to the panel. The retainer includes a plate with a substantially closed loop on one end. The other end of the plate is mounted to the cleat or the panel. The substantially closed loop of the plate is pivotally connected to an end of the L-shaped fastener. When the box or crate is disassembled, the L-shaped fastener remains secured to one of the panels.