Patent ID: 9714674
Date: 2017-07-25
CPC Classifications: F16B

Claim:
1. A fastener for mounting through an aperture of a wall, the aperture having an aperture diameter, the fastener comprising: an inner stud sized to fit through the aperture of the wall, the inner stud having a shank with an external surface that is threaded, and further having an inner bore having an inner surface that is threaded; an installation tool that includes an elongate body that extends from a proximal end to a distal end, wherein the distal end includes an external surface that is threaded, such that the inner stud may be operably mounted on the installation tool; a spiral structure having an inner loop that is operably mounted on the inner stud, and which extends to an outer loop that has a diameter that is larger than the aperture diameter, the spiral structure extending around the installation tool when the inner stud is operably mounted on the installation tool; an outer nut having an inner conduit, the outer nut having an inner conduit that is larger than a diameter of the installation tool such that the outer nut may be operably mounted on the installation tool above the spiral structure, wherein the outer nut may be threadedly engaged with the inner stud to compress the spiral structure into a washer-like structure; and wherein the external threads of the installation tool spiral in a direction that is opposite of the threads of the external surface of the shank of the inner stud.