Abstract: A plastic tamper-evident screw closure is disclosed for containers and bottles. An exemplary tamper-evident screw closure includes a screw cap, which has a cylindrical jacket with an internal thread, and an annular tamper-evident strip which is connected to a free edge of the jacket by breaking webs or the like and is equipped with locking elements. The tamper-evident strip can have a smaller outside diameter than the jacket of the screw cap. The locking elements can be configured as undercut regions in the tamper-evident strip which in each case run between two adjacent breaking webs as a ring segment, and extend from a cylindrical inner wall to an outer wall of the tamper-evident strip.