Abstract: A fastening device for door, windowframes or cases comprising an adjusting screw attachable in a wall opening and a locking plate cooperating with said screw and fixable in said frame. The locking plate is attachable against the end border of the frame faced towards the edge of the wall opening. From the fastening plate of said locking plate a locking means protrudes allowing connection selectable in a longitudinal direction of said frame to a snap in connection provided at the upper part of the adjusting screw and provided to engage the locking plate.