This locking plate secures a lock nut in place on a shaft assembly by engaging with the nut slots and bending against a keyway or groove on the shaft, preventing loosening under rotation. Main dimensions follow DIN 5406, with a bore diameter of 70.0 mm, an outside diameter of 98.0 mm, and a net mass of 32.0 g. The tab construction allows one of the tabs to be bent into a matching slot of the lock nut once correct axial position is reached. Used together with a matching lock nut of corresponding bore size, the plate provides a mechanical anti-rotation feature without relying on friction or adhesive locking methods. Its flat, thin-walled design fits within standard axial spacing for shaft-nut assemblies of this bore range, and no lubrication or sealing function applies since the part itself is a static locking element rather than a rotating bearing component.