Аннотация:The features of propagation in free space of light beams with a dislocation structure of thewavefront are considered. The stability to the influence of diffraction of small-scale dislocationsystems providing spatial super-resolution is analyzed. Based on a comparison of the characteristics of dislocation formations of various types, a conclusion is made about the greatest structural stability of systems with special type screw dislocations. Such dislocations can be obtained by azimuthal rotation of edge dislocations characterized by a sharp phase jump of light oscillations along the singular line. The obtained results will find application in optimizing the characteristics of opticaldevices with ultra-high spatial resolution, as well as in developing software for the operation ofspatial light modulators forming beams with a specified amplitude-phase profile.