An electrical connector system, comprising: a first connector including an electrically conductive pin contact, the pin contact including a head portion projecting outwardly along an axial direction from a face of the first connector, wherein the head portion includes a first groove and a second groove each formed along a circumference thereof; a second connector having a contact-receiving cavity extending in the axial direction and opening along a rear end of the second connector, wherein the second connector is configured to be mated to the first connector by sliding the connectors (105, 160) along the axial direction to insert the head portion of the pin contact into the contact-receiving cavity, and wherein the second connector further includes an interior wall forming a boundary of the contact-receiving cavity; a first channel recessed inwardly relative to the interior wall of the second connector; and a first coiled spring seated within the first channel of the second connector, wherein, when the first and second connectors (105, 160) are mated in a locked configuration, the first coiled spring engages the first groove of the head portion of the pin contact to latch the first and second connectors (105, 160) together in a locked configuration, wherein the first groove is formed at a first depth relative to an exterior surface of the head portion, and wherein the second groove is formed at a second depth relative to the exterior surface of the head portion, the first depth being shallower than the second depth, characterized in that the head portion of the first connector further including a third groove and a fourth groove each formed along a circumference thereof, wherein the third groove is adjacent the second groove and the fourth groove is adjacent the third groove, and wherein the first groove and third groove are formed at substantially equal depths relative to one another, and wherein the second groove and fourth groove are formed at substantially equal depths relative to one another. a first connector including an electrically conductive pin contact, the pin contact including a head portion projecting outwardly along an axial direction from a face of the first connector, wherein the head portion includes a first groove and a second groove each formed along a circumference thereof; a second connector having a contact-receiving cavity extending in the axial direction and opening along a rear end of the second connector, wherein the second connector is configured to be mated to the first connector by sliding the connectors (105, 160) along the axial direction to insert the head portion of the pin contact into the contact-receiving cavity, and wherein the second connector further includes an interior wall forming a boundary of the contact-receiving cavity; a first channel recessed inwardly relative to the interior wall of the second connector; and a first coiled spring seated within the first channel of the second connector, wherein, when the first and second connectors (105, 160) are mated in a locked configuration, the first coiled spring engages the first groove of the head portion of the pin contact to latch the first and second connectors (105, 160) together in a locked configuration, wherein the first groove is formed at a first depth relative to an exterior surface of the head portion, and wherein the second groove is formed at a second depth relative to the exterior surface of the head portion, the first depth being shallower than the second depth, characterized in that the head portion of the first connector further including a third groove and a fourth groove each formed along a circumference thereof, wherein the third groove is adjacent the second groove and the fourth groove is adjacent the third groove, and wherein the first groove and third groove are formed at substantially equal depths relative to one another, and wherein the second groove and fourth groove are formed at substantially equal depths relative to one another.