Abstract: A locking connector system includes a first body having a rotatable collar mounted thereon and a second body configured to mate with the first body, including one or more components configured to control the breakaway force of the first and second bodies. The first and second bodies include telescopingly engaged body portions and axially mating contacts. The connector system further includes an annular collar encircling the telescoping body portions and rotatively held on the first body and a spring inside the collar. The ends of the spring are confined between the first body and the collar so as yieldingly to resist rotation of the collar relative to the first body. Axially aligned tabs are provided on the collar and the second body for latching the first body and the second body together through a predetermined range of forces.