Fiber array connectors of the type having a connector body and adapted to house a plurality of fibers which carry data through the connector. Ferrules are provided to the connectors which are formed by first ferrule members having configured thereon by an electrical discharge machining process at least one guide pin hole, and a plurality of grooves for housing a plurality of fibers in registration in the ferrules. The ferrules are also made up of second ferrule members in engagement with the plurality of grooves for clamping the plurality of fibers in registration in the grooves so that the plurality of fibers can be held in precise alignment with the connector and so that data is transmitted therethrough with a minimum possibility of transmission error.