Abstract: A fastener bead removably affixed to a flexible tension element of a cargo holder and used by removably inserting the bead in the wider portion of a keyhole-type slot in a support structure. The bead in use is trapped and held by the margin of the narrow portion of the keyhole slot. The bead has a through-passageway with axially opposite loop-entrance and loop-exit ends thereof located respectively at first and second opposite end surfaces of the bead. In one bead embodiment an external groove in a bead first side surface is sized for retaining a portion of each two runs of a free-end loop of the tension element disposed in side-by-side contacting relationship after exiting the passageway and lead in the groove toward engagement with trailing portions of the runs that trail back out the entrance end of the passageway as they extend back toward cargo holder attachment.