Abstract: Two arrangements for retaining a screen in and on a shaker frame are shown. Both arrangements provide apparatus for the ready removal and replacement of the screen in the shaker frame. The first arrangement provides apparatus for screens having one-quarter inch and larger openings. In this apparatus a multiplicity of T-bolts is employed. The heads of these T-bolts cover two or three screen openings while the shanks of the bolts pass through an opening in the screen without damage. The threaded ends of these bolts are turned into the threaded portions of T-nuts whose head portions are slidably carried on a rectangular bar disposed transversely of the frame. There is a plurality of these transverse bars each of whose ends is actuated up or down by a toggle mechanism. When the bars are moved downwardly by the toggle mechanisms the T-bolts which are retained by the T-nuts snugly retain the screen on fixed ribs on the screen frame. For screens with smaller openings a second apparatus is provided.