UNE-EN 4531-004:2012 Aerospace series - Connectors, optical, circular, single and multipin, coupled by threaded ring - Flush contacts - Part 004: Jam nut receptacle - Product standard (Endorsed by AENOR in July of 2012.)
2012UNE-EN 4531-004:2012 Aerospace series - Connectors, optical, circular, single and multipin, coupled by threaded ring - Flush contacts - Part 004: Jam nut receptacle - Product standard (Endorsed by AENOR in July of 2012.)