Universal quick connect pallet attachment

A pallet assembly, comprising

• a cargo pallet, comprising a platform and a plurality of rails on four sides of the platform, and a plurality of tie-down rings located between every other two rails;
• and
• a pallet attachment for attaching to the cargo pallet for locking and extending a pallet surface the pallet surface, the applet attachment comprising:
• a top surface having at least one shoulder bolt recess and at least one shoulder bolt, each of at least one shoulder bolt recess has a flat bottom surface and a hole for receiving one of the at least one shoulder bolt, wherein the bottom surface of the at least one shoulder bolt recess is lower than the top surface, and wherein the at least one shoulder bolt recess and the at least shoulder bolt are used for receiving and engaging with at least one pallet tie-down ring included in the pallet;
• and
• and a step-down ledge having at least one attachment holes adapted to engage with at least one attachment element of an accessory.