A universal locking pin can be inserted in a through hole for connecting a wide variety of objects. Once engaged in a through hole, the universal locking pin can function as mounting point for attaching items. Materials can be mounted to the attachment hole such as rope or carabiners, cords, rings, and other materials with suitable tensile strength. The locking pin can be scaled up or down in size and constructed from a variety of materials including metal, plastic, wood, ceramic, composites, and the like.