Abstract: A device for fastening or securing constructional elements includes a fixing member and a support. The fixing member includes a rod and radially outwardly projecting locking arms, placed at the extremity of the rod, and the support having a cut-out with cut-out sections extending radially outwards from a centre of symmetry of the support. The support further includes locking projections formed between the cut-out sections, the locking projections having a spring plate portion and a latching portion. The spring plate portions are set at an angle to a plane of an upper surface of the support and are provided with a socket shaped to receive and be engaged with part of the locking arms. The locking arms are adapted to be guided axially through the cut-out and rotated to effect latching behind the locking projections.