A unitary plastic material cable strap fastener having a flange with a plug member on one side for engaging in a hole in a panel to hold the fastener in position. The plug having a stem with a head at its end and rows of radial wings arranged along its length. A stud extends from the opposite side of the flange coaxial with the plug. A flexible strap member is attached to the flange by a bifurcated end having a pair of legs formed by an opening in the strap end. The strap extends from the flange in the same direction as the stud with the stud extending into the opening with the legs straddling the stud. The strap is provided with a series of stud receiving openings for engaging the stud when the strap is formed into a loop. The flexible legs of the strap permit the strap to be rotated or folded relative to the longitudinal axis of the plug and stud so that it extends perpendicular thereto to permit the stud receiving openings to engage the stud.