Pin

A pin including a metal body extending along an elongation axis between a first end of the pin and a second end of the pin, the metal body having an upper face and a lower face opposite to the upper face, the pin comprising:

• a substantially planar central section;
• two intermediate sections each extending laterally from the central section and in a diverging manner with respect to each other, and so as to allow stacking of at least two pins in a stacking direction perpendicular to the central sections of the pins;
• latching means arranged on both of the two intermediate sections and configured to hold the pins together in pairs by latching when they are stacked;
• and
• a generally beveled engagement portion at the second end of the pin.