BS EN 4857-004. Aerospace series. Connectors, electrical, circular, scoop-proof, triple start threaded coupling, operating temperature 175 °C or 200 °C continuous. Part 004. Receptacle, hermetic, square flange mounting. Product standard|Test methods, Aerospace transport, Corrosion tests, Compression set, Mixing, Tear tests, Elastic constants, Elongation, Tensile strength, Density, Hardness testing, Approval testing, Qualification approval, Quality assurance systems, Quality assurance, Synthetic rubber, Natural rubber, Air transport engineering, Marking, Designations, Aircraft engineering, Temperature, Connectors (electric), Cables (electric), Circuit-breakers, Nickel alloys, Alloys, Non-ferrous alloys, Shape, Diameter, Sleeving (electrical), Durability, Environmental testing, Testing, Testing methods, Electrodes, Melting, Air, Steels, Contrast (optical), Measurement, Aircraft components