US Patent 9267529 Removable long-lived and reusable U-shaped hybrid nut

A NUT WITH A C-SHAPED PROFILE, of the type formed by a punched metal sheet folded onto itself for fixing onto a panel, wherein one of the arms has a hole for the arrangement of a screwed device with at least one thread and wherein the other arm, which is aligned with the axis of the preceding hole, has another hole for receiving the nut tightening screw, the upper base being provided with incisions which define horizontal connecting portions separated from the body of the upper base and longitudinal connecting portions which form an extension of the former and which join together the upper base and lower base.