This is an original ADR crown nut, identified by part number 908DF4865. It features an M48x1.5 metric fine thread and requires a 65mm wrench for installation. With a height of 44mm and constructed from steel, this robust nut is designed for secure fastening in various agricultural applications, including Horsch and Amazone machinery. It typically weighs 1.8 kg and is often supplied with a cotter pin for enhanced security.