This standard specifies the dimensions of the installation holes and the design bosses and installation
recesses for flanged fluid to EN 3630 and EN 3631, and method of callout on drawings.
EN 3633:2008 Referenced Document
EN 3630 Aerospace series - Fluid fittings, flanged, straight - Sealing by O-ring for 0,8 mm thick tubes
EN 3631 Aerospace series - Fluid fittings@ flanged@ 90��lbowed - Sealing by O-ring for 0@8 mm thick tubes*, 2014-10-01 Update
EN 3633:2008 history
2008EN 3633:2008 Aerospace series - Installation hole for fluid fittings, flanged