Method of manufacture and assembly of fastening device

Claim 1

A METHOD OF ATTACHING A METAL NUT TO A PANEL WHEREIN THE NUT HAS A SURFACE DEFINING A LOAD CARRYING PORTION SURROUNDING A DEPRESSION FROM WHICH A CENTRALLY THREADED ATTACHING POST HAVING A RADIALLY ENLARGED LOWER PORTION PROJECTS, SUCH METHOD COMPRISING THE STEPS OF PLACING THE ABOVE MENTIONED NUT SURFACE IN FACE TO FACE RELATIONSHIP WITH A FIRST SIDE OF SAID PANEL AND SUPPORTING THE NUT, FORCING A HOLLOW TOOL MECHANISM HAVING AN INTERNAL CONTOUR COMPLEMENTARY TO THE CONTOUR OF THE TERMINAL PORTION OF SAID POST AGAINST THE REMOTE SIDE OF SAID PANEL IN AXIAL ALIGNMENT WITH SAID POST TO PUNCH A SLUG FROM SAID PANEL TO PROVIDE AN OPENING IN THE PANEL PENETRATED BY SAID POST AND ACCOMMODATE DISPOSAL OF THE SLUG INTO THE INTERIOR OF THE HOLLOW TOOL MECHANISM, IMPARTING CONTINUED MOVEMENT TO AT LEAST A PORTION OF SAID TOOL MECHANISM TO DEFORM PORTIONS OF SAID PANEL ADJACENT THE PUNCHED OPENING INTO THE ABOVE MENTIONED DEPRESSION AND BY MEANS OF SUCH CONTINUED MOVEMENT OF SAID TOOL PORTION FORCING THE ABOVE MENTIONED LOAD CARRYING PORTION OF SAID NUT INTO ABUTTING RELATION WITH THE FIRST SIDE OF SAID PANEL, AND UTILIZING MOVEMENT OF THE PORTION OF SAID TOOL MECHANISM HAVING THE ABOVE MENTIONED COMPLEMENTARY INTERNAL CONTOUR TO DEFORM METAL FROM THE EXTERIOR OF THE ENLARGED LOWER PORTION ONLY OF SAID POST AND FORCING SUCH DEFORMED METAL INTO OVERLYING RELATION WITH THE MARGIN OF SUCH DEFORMED PANEL PORTIONS SURROUNDING THE ABOVE MENTIONED OPENING TO SECURE THE NUT TO SAID PANEL.