A coaxial connector (50) float-mounted in a panel aperture (58) for mating with a mating coaxial connector (10) fixedly mounted in a second panel (12) and spring biased to adapted to a range of axial positions of the mating coaxial connector upon full mating. A subassembly (60) is movably mounted within an outer shell (56) of connector (50) and contains a contact member (68) within a dielectric sleeve (70) all within an intermediate conductive housing (62). An annular spring (94) of minimal axial dimension is disposed between a rearwardly facing abutment surface (100) of the intermediate housing and a flange of the outer shell (56) rearwardly thereof, biasing the subassembly forwardly. Annular spring (94) permits radial movement of subassembly (60) within outer shell (56) to adjust to an offset mating coaxial connector, and also permits incremental axial movement resulting from mating. Coaxial connector (50) is useful to provide a coaxial connection to a stripline circuit board (54) having a resilient contact (116 ) secured to a signal circuit (110) thereof also permitting limited axial and radial movement resulting from connector mating.