UNE-EN 2606:2009 Aerospace series - 60° interface for adaptors, threaded, with lockring - Geometric configuration (Endorsed by AENOR in September of 2009.)
2009UNE-EN 2606:2009 Aerospace series - 60° interface for adaptors, threaded, with lockring - Geometric configuration (Endorsed by AENOR in September of 2009.)