Anti-twist signholder support assembly

Anti-twist signholder insert component, adapted for locking insertion in a mating mounting socket, which comprises

• a male attachment insert arranged for connection of an overlying signholder thereto, and having a central generally vertical axis, and including an upper generally horizontal multi-sided anti-twist plate, and a lower lock formation integrally connected to the plate and including a pair of diametrically arranged, vertically extending and horizontally resilient catch fingers, each having one end integrally connected to the plate and another end disposed as a catch containing free end,
• the plate and lock formation being adapted for coaxial insertion into a mating vertical integral female mounting socket including an upper generally horizontal multi-sided anti-twist entrance recess having a perimetric shape corresponding the shape of the plate and sized for receiving the plate non-rotatably therein, and a lower internal multiple slot formation inwardly of the recess and having a diametrical arrangement and shape corresponding to the arrangement and shape of the lock formation and sized for receiving the lock formation, including the horizontally resilient fingers, non-rotatably and completely within the lateral confines thereof, and provided with an internal catch engaging edge formation disposed completely within the lateral confines of the internal slot formation for releasable self locking of the horizontally resilient fingers thereat, the recess and slot formation being integrally interconnected,
• such that the insert is alternatively coaxially insertable in the socket with the lock formation in the slot formation in more than one interchangeable relative angular rotational position, with respect to the axis, and such that in any alternative insertion position the recess will engage stationarily the plate for providing an anti-twist connection therebetween in which all external rotational forces about the axis acting on the insert will be transmitted directly by the plate to the recess remote from the lock formation and slot formation.