Abstract: An interlock secures adjacent panels of ready to assemble furniture in a selected angular relationship and includes a rigid elongated core member including at least a pair of elongated faces thereon disposed in a predetermined angular relationship (usually at right angles) to one another. A plurality of connecting bolts are fixed to the core member and projecting outwardly from each of the elongated faces in predetermined spaced relation to each other along said faces. These connecting bolts are adapted to enter into corresponding bores in the end faces of the panels which are thus secured to the interlock. These connecting bolts each have means thereon for engaging with suitable locking elements, such as cam locks, disposed in the respective bores in the panels whereby the connecting bolts are securely held in the bores with the elongated faces of the core member is close abutting relation to the respectively associated end faces of the panels.