A coaxial connector provided with an increasing diameter compression sidewalk A grip ring is seated within the coupling body bore and is provided with a plurality of coupling spring fingers extending from the grip ring. An inner diameter of the coupling spring fingers has a grip surface and an inward projecting cable stop is provided at a connector end of the grip ring. The connector body and the coupling body are coupled together via threads, the grip ring dimensioned for axial advancement of the coupling body along the threads to drive the coupling spring fingers against the compression sidewall to exert a compression force radially inward upon the outer diameter of the outer conductor seated in the coupling body bore abutting the cable stop.