This part of IEC 61169-42, which is a sectional specification (SS), provides information and rules for the preparation of detail specifications (DS) for CQN series RF coaxial connectors, with characteristic impedance of 50 Ohms, with threaded coupling and operating frequency limit up to 11 GHz, used in wireless, microwave, telecommunication, and other fields, connecting with RF cables or micro-strips. It also prescribes mating face dimensions for general connectors-grade 2, dimensional details of standard test connectors-grade 0, gauging information and tests selected from IEC 61169-1, applicable to all detail specifications relating to CQN series connectors. This specification indicates the recommended performance characteristics to be considered when writing a detail specification and it covers test schedules and inspection requirements for assessment levels M and H (see Tables 8 and 9). This specification indicates the recommended performance characteristics to be considered when writing a detail specification and it covers test schedules and inspection requirements for assessment levels M and H.