Ballistic resistant cap nut

A ballistic resistant and tamper proof fastener assembly adapted for use on a flight deck wall, wherein the flight deck wall demarcates a flight deck area and a passenger cabin area, the fastener assembly comprising:

• a threaded fastening element;
• a fastening cap nut having a threaded bore and a shoulder portion, said shoulder portion having a non-circular shape in accordance with a shape of a locking cut-out formed in said flight deck wall that faces said passenger cabin area, said flight deck wall further including an aperture opening onto a side of said flight deck wall that faces said flight deck area, said aperture being generally coaxially aligned with said locking cut-out;
• said fastening cap nut further being formed from a ballistic resistant material;
• and
• wherein said shoulder portion of said fastening cap nut fits within said locking cut-out when said fastening cap nut is secured to said flight deck wall by said threaded fastening element, thereby preventing tampering with said fastener assembly by an individual positioned in said passenger cabin area.