DIN EN 4639-004 : 2009 Title: Aerospace series - Connectors, optical, rectangular, modular, multicontact, 1,25 diameter ferrule, with removable alignment sleeve holder - Part 004: Female optical module - Product standard; German and English version EN 4639-004:2007 Year: 2009 Publisher: DIN Media GmbH Availability: Within 1-2 working days