Abstract: This disclosure provides an improved tie-strap fastener (the “releasable fastener”) for releasably securing elongate articles to a panel. The releasable fastener includes a body defining a laterally spaced curved aperture, an elongated strap projecting laterally outward from a lateral side of the body between a top surface and the aperture, and a locking pawl disposed the aperture. The body defines an opening extending internally from a side surface of the body to the aperture to provide access to the locking pawl, which is adapted to releasably engage and retain the elongated strap when inserted into the aperture from the top surface of the body. Methods of installing the releasable fastener on a panel, releasably fastening elongate articles to the panel with the releasable fastener, and related assemblies are also provided.