DS EN 3682-004:2012 Aerospace Series - Connectors, Plug And Receptacle, Electrical, Rectangular, Interchangeable Insert Type, Rack To Panel, Operating Temperature 150 Degrees C Continuous - Part 004: Size 2 Receptacle - Product Standard Specifies the size 2 receptacle used in the family of rectangular electrical connectors for rack to panel, with interchangeable inserts.