A hole plug includes a main body having an inner surface, a perimeter, and which further includes a center axis that is substantially perpendicular to the inner surface and defines an axial direction. Additionally, a securing member extends axially from the inner surface and includes a base directly secured to the inner surface of the main body and a cantilevered protuberance at least partially axially spaced from the inner surface. Furthermore, the protuberance at least partially extends along a circumferential path that is a parallel curve of the perimeter positioned inward from the perimeter.