A self-locking mechanism that is attachable to a panel is provided. The mechanism includes a structure defining a void therein. There is also an opening in the structure coinciding with an end of the void. A pin is positioned within the void and a pin head of the pin is positioned at the opening. The pin moves back and forth within the void. The pin moves between a retracted position from within the void and an extended position. A receptacle is also positioned on the structure and oriented at an angle to the opening. The pin head is able to magnetically connect with a second receptacle from a second self-locking mechanism. The pin head or the receptacle, or both, include a magnet.