BS EN 3645-009:2019 Aerospace series. Connectors, electrical, circular, scoop-proof, triple start threaded coupling, operating temperature 175 °C or 200 °C continuous Receptacle, round flange, jam nut mounting. Product standard

Electric contacts
Electric connectors
Seatings
Temperature
Environment (working)
Dimensions
Flanges
Surface treatment
Designations
Aircraft components
Circular shape
Locknuts
Electrical components
Threaded components
Electric sockets

Link: BS EN 3645-009:2019 Aerospace series. Connectors, electrical, circular, scoop-proof, triple start threaded coupling, operating temperature 175 °C or 200 °C continuous Receptacle, round flange, jam nut mounting. Product standard
Source: BSI Standards