US Patent 7329142 Compression snap electrical connector

An electrical connector has a connector body with a bore and a cap through which a stranded insulated conductor is threaded. A ridge in the external surface of the cap engages with at least one groove in the bore to secure the conductor in place. Preferably, there are at least two such grooves in the bore at different axial positions, and the cap is axially advanced from one such groove to another one farther inside the bore to effect full physical and electrical connection.