A threaded connector includes a base and a threaded male portion projecting axially outward from the base. The threaded male portion is adapted to mate with an associated threaded female socket. The threaded male portion includes a helical thread comprising three sections: (i) a lead-in section; (ii) a transitional cam-locking section; and, (iii) a friction-locking section. The friction-locking section is located adjacent the base, the lead-in section is spaced from the base, and the transitional cam-locking section connects the lead-in section to the friction-locking section. The helical thread includes a tip and a root. The lead-in section is defined by a first major diameter at the tip of said thread and the friction-locking section is defined by a second major diameter at the tip of the thread. The second major diameter is greater than the first major diameter. The transitional cam-locking section includes a locking cam defined by a varying magnitude major diameter at the tip of the thread that increases from the first major diameter to the second major diameter in a smooth, continuous transition without interrupting the helical thread.