Abstract: A novel system for manufacturing a variety of fiber optic connectors which are compatible with existing connector formats, including FC, SC and ST push-pull connectors. The system includes a connector subassembly which is constructed of components common to each of the novel connector designs. The connector subassembly includes a ferrule and ferrule collar contained in a connector body, a spring biasing the collar toward the ferrule, a crimp ring for securing the strength members of the fiber optic cable to the connector body, and a boot for strain relief at the crimp location. Several different connector shells are provided for each of the connector formats, and the interior of the shells are adapted to be attached to the single connector body. In an alternative system, separate body/shells are provided which merge the common body with the different connector shells.