Used on nuclear power plants. 0.800" overall length threaded body is unf series designator. the thread size is 0.250". the thread class is 2a. the thread quanity per inch is 40. the socket has 6 inch wire leads.
Used on 5821-01-413-4233, an/arc-220(v) and an/vrc-100(v) high frequency radios.. 0.200" overall length 0.050" overall width current rating of 1 amp. contacts are beryllium copper with gold over nichel plating.