PROBLEM TO BE SOLVED: To provide a window screen fixture that is a fixture used to mount a functional object such as a case containing insecticide or deodorant, etc., on a net surface of a window screen, wherein loop-like engaging elements of a loop surface fastener mounted in the functional object side are firmly engaged with the fixture existing at the opposite side across the net surface by easily penetrating through the net surface, and thereby high engaging force is obtained.SOLUTION: A window screen fixture comprises a substrate and a large number of engaging elements projecting from the surface of the substrate. The engaging elements comprises a stem projecting from the surface of the substrate, and engaging projections projecting sideward from the stem and existing at two or more stages along the stem height direction. Preferably, the projecting lengths of the engaging projections of respective stages projecting from the stem are substantially the same, and further the stem width of the stem is narrowed as going to the most top part from the substrate surface at each stage where the engagement projection exists.
