Patent ID: 8393839
Filing Date: 2013-03-12
Classification: F16B

Abstract:
1. A screw connection, comprising: a threaded screw section, a polygonal nut screwed on the screw section, an intermediate washer, which is secured against rotation relative to the screw section and is rotatably mounted on the nut, said intermediate washer comprising a grid disposed on the circumference thereof, and at least one catch made of a resilient sheet-metal component mounted on the nut such that when a wrench is applied to the nut, said at least one catch is compressed and drawn out of engagement with the grid so that the nut can be freely turned, and when the wrench is removed from the nut, the catch moves into engagement with the grid to lock the nut against rotation relative to the intermediate washer and the screw section, wherein the sheet-metal component is mounted by an annular collar connected to an end face of the nut on the opposite side of the nut from the intermediate washer.