DS EN 3372-003:2007 Aerospace Series - Connectors, Electrical, Circular, Medium And High Contact Density, Scoop-Proof With Bayonet Coupling, Operating Temperatures -65 Degrees C To 175 Degrees C Or 200 Degrees C Continuous - Part 003: Square Flange Receptacle - Product Standard Defines the characteristics of square flange mounted receptacles in the family of circular electrical connectors coupled by bayonet ring.