BS EN 4531-001:2008 Aerospace series. Connectors, optical, circular, single and multipin, coupled by threaded ring. Flush contacts. Technical specification
2017BS EN 4531-001:2017 Aerospace series. Connectors, optical, circular, single and multipin, coupled by triple start threaded ring. Flush contacts. Technical specification
2012BS EN 4531-001:2012 Aerospace series. Connectors, optical, circular, single and multipin, coupled by triple start threaded ring. Flush contacts. Technical specification
2008BS EN 4531-001:2007 Aerospace series — Connectors, optical, circular, single and multipin, coupled by threaded ring — Flush contacts — Part 001: Technical specification