The 4-879347-6 is a part of TE Connectivity's circular MIL-DTL-26482 Series I (aka MIL-C-26482) connector series. This connector has a shell size 10 and two #6-32 Female contacts. The contacts are backwires, meaning they are terminals at the end of a stripped and tinned wire that is inserted into the connector. The contacts are designed for use with an AWG 28 solid or stranded wire, and the connector is rated for up to 5 Amps and 250V AC/DC (applicable ratings depend on final assembly). The connector is made of metal and is threaded, making it capable of standing up to shock, vibration, fluids, and dust environments.