A pair of male and female coaxial connectors which includes male and female rectangular housings with a plurality of through holes arranged at a predetermined interval in a lengthwise direction of the rectangular housing in which male and female terminals are arranged in at least one line. The male terminals includes a plurality of male outer conductors each fitted in one of the through holes and having upper and lower inner surfaces extending parallel to a specified plane which extends in the lengthwise direction and in a widthwise direction of the rectangular housing; a plurality of male dielectric blocks each fitted in a rear portion of one of the male outer conductors to define a cavity within the one male outer conductor; and a plurality of male central conductors each projecting into the cavity from one of the dielectric blocks and having upper and lower outer surfaces extending parallel to the specified plane.
