Abstract: A low insertion force electrical connector having a pair of connector members each with a plurality of contacts therein. One of the connector members includes a stationary insulator and an activating disc, receiving contacts mounted in axially aligned bores in the two parts. A shell surrounding the activating disc has an arcuate cam surface thereon which cooperates with a roller bearing on the activating disc to cause the activating disc to shift with respect to the axes of the contact bores upon rotation of the shell to cause the contacts of the two connector members to engage. An interlock is formed on the shell for allowing the connector members to be correctly positioned prior to electrically connecting the contacts together. The interlock includes spring detent means for connector retention and for providing an audio and tactile indication of full mating of the connector members.