Abstract: Disclosed is a locking spring screw formed from a cylindrical screw body having a screw head that includes a tool slot adapted for receipt of a flexible spring member. The tool slot includes at least one outlet formed adjacent to the tool slot which is adapted for passage therethrough of a tongue extending outwardly from the spring member. A ridge is located opposite the outlet from the cylindrical screw body and formed at least partially around the circumference of the screw head wherein the spring member is retracted during installation and, upon the ridge engaging a flange, the spring member is released preventing screw head removal by entrapping the flange between the ridge and the tongue of the spring member.