Abstract: A moulded insulating housing for a female electrical contact has an internal latching boss for engagement with detent means on the female contact. The latching boss, which is shaped as a right angle triangle, as seen in plan view, has a first ramp tapering towards one end of the housing and a latching shoulder facing the opposite end of the housing. A second ramp formed integrally with a lower wall of the housing opposite to the first ramp is directed towards the one end of the housing. The latching boss, has a flat summit which is also shaped as a right angle triangle as seen in plan view, the first ramp and the latching shoulder immediately adjoining the flat summit.

Abstract: An electrical connector for electrically connecting the conductive cores of insulated wires has external bosses on its housing to indicate the type of connection provided by the connector.

Abstract: A hand tool comprises a pair of arms which are pivotally connected together at a position intermediate their ends, the parts of the arms on one side of the pivot constituting handles and the parts of the arms on the other side of the pivot constituting jaws between which an electrical connector comprising a housing with a hinged lid can be closed by movement of the handle parts of the arms towards each other, and includes a spring wire member which serves to partially close the lid of the connector prior to final closing thereof by the jaw parts.