The upper end of a cover is provided at the upper end of a hanger body so as to be capable of rotating in the vertical direction. The cover is adapted to be capable of rotating between a closed position at which the cover abuts on the front surface of the hook of the hanger body and an open position at which the cover is rotated upward by a predetermined angle from the closed position. When located at the closed position, the cover closes an upper open section which opens an engagement recess to the outside. An insertion hole (is provided in the cover. The latch of a padlock is inserted through both the insertion hole and the engagement recess. The abutting of the latch against the backward facing back surface of the hook prevents the cover from rotating from the closed position to the open position side.