The Fischer adjustment screw FAFS is the solution for infinitely adjustable mounting of wooden constructions or frames. With the special combination of bit and setting tool, the screw is driven flush with the surface of the attachment. The recessed clip of the screw does not rotate during adjustment, allowing the screw head to maintain its position in the attachment. The distance between the component and the substrate can be precisely and infinitely adjusted using the opposite rotation direction with the bit. The adjustment screw is ideal for securing and adjusting ceiling and wall substructures on wooden substrates.