Method for forming threads in a rivet fastener

A method for forming a rivet fastener, the method comprising:

• a) placing a portion of a body of the rivet fastener into a head opening of a head of the rivet fastener;
• wherein the head includes a centering feature formed as a protrusion on a bottom surface of the head and extending towards another portion of the body;
• wherein the head opening is defined by an interior threaded portion of the head;
• wherein the interior threaded portion extends along an entire longitudinal length of the head, including the centering feature;
• wherein the portion of the body which resides within the head is cylindrical and includes a body hole extending along at least a portion of a longitudinal length of the body;
• wherein the portion of the body which resides within the head opening has an external surface that is substantially smooth;
• and
• wherein when the body is inserted into the head, the head opening aligns with the body hole;
• b) inserting a swaging tool through the head opening and into the body hole and applying a deformation force onto the portion of the body within the head;
• wherein to generate the deformation force, the swaging tool exerts an outward radial force to the portion of the body that resides within the head opening;
• and
• wherein the deformation force causes the portion of the body that resides within the head to be permanently deformed into an exterior threaded portion reciprocal to and engaged with the interior threaded portion of the head;
• c) removing the swaging tool from the body and the head;
• wherein the exterior threaded portion of the body is removably engaged with the interior threaded portion of the head to removably secure the body to the head;
• and
• d) inserting a mandrel into the body hole to form the rivet fastener.