IEC PAS 61076-2-114:2016(E) describes circular connectors with M8 screw-locking typically used for data transmissions in industrial applications. These connectors consist of fixed and free connectors either rewireable or non-rewireable, with M8 screw-locking. Male connectors have round contacts with a diameter of 0,8 mm. The coding provided by this PAS prevents the mating of accordingly coded male or female connectors to any other similarly sized interfaces covered by other standards. Keywords: Circular connector, Screw-locking, M8