EN 4531-003:2007 Aerospace series - Connectors@ optical@ circular@ single and multipin@ coupled by threaded ring - Flush contacts - Part 003: Square flange receptacle - Product standard
2012EN 4531-003:2012 Aerospace series - Connectors, optical, circular, single and multipin, coupled by triple start threaded ring - Flush contacts - Part 003: Square flange receptacle - Product standard
2007EN 4531-003:2007 Aerospace series - Connectors@ optical@ circular@ single and multipin@ coupled by threaded ring - Flush contacts - Part 003: Square flange receptacle - Product standard