This standard specifies the dimensions and main electrical properties of the structure and mating parts of two types of high-voltage coaxial connectors. This standard applies to high-voltage coaxial connectors connected to nuclear electronic instruments. Products manufactured according to the structure, size and technical requirements stipulated in this standard can be completely interchanged with foreign similar products in terms of mechanical and electrical properties. For the coaxial cable connectors used for signal transmission, see the three recommended signal connectors in Appendix A.