Abstract: A connector socket terminal structure (6) of the integrated wire termination system type for accepting wires (12) with complemental mating pins (8) and is especially suitable for use in environmentally sealed aircraft switches. The retainer (10) is disposed in a hollow terminal (2) and serves to lock the wire termination pin (8) in place in the terminal and insure good electrical contact. The retainer (10) is pressure assembled within the terminal bore (2d, 2e) by forming it of slightly larger diameter than of the bore and squeezing it when it is pushed therein. To control the depth of insertion of the retainer (10) in the bore, the bore (2d, 2e) is provided with a shoulder and the retainer is provided with a plurality of sheared tabs (10a) spaced therearound that abut the shoulder to limit its depth of insertion.