Tethered fastener and related methods

A motor vehicle airbag occupant restraint system tethered fastener comprising:

• a first plastic connector end coupled to a second plastic connector end via an elongate plastic tether having a longitudinal length extending completely from and between the first and second connector ends;
• a frangible strap extending from a first point along the longitudinal length of the plastic tether to a second point along the longitudinal length of the plastic tether;
• a metal clip non-releasably coupled to the second connector end;
• wherein the first and second connecter ends are releasably adjacently coupled together with the frangible strap in a non-extended configuration when the first connector end is non-releasably coupled to a first of an associated automobile portion and an associated trim component and the second connector end is non-releasably coupled to a second of the associated automobile portion and associated trim component via the metal clip;
• and
• wherein the frangible strap has a longitudinal strap length that is less than the distance between the first and second points along the longitudinal length of the plastic tether, and wherein the frangible strap deforms, separates, or both, as a result of a tensile force acting on the frangible strap as the plastic tether moves from the non-extended configuration to an extended configuration when an associated airbag deploys separating the associated automobile portion and trim component and the first and second connector ends.