electrical contact with the cable connector 20 comprises a rigid tubular metallic nut 24 with a conventional faceted preferably hexagonal drive head 26 integral with a protruding coaxial stem 28 nut 24 is torqued during installation conventional internal threads 30 are defined in the stem interior for rotatably threadably mating with a suitably threaded socket the open tubular front end 21 connects through the open interior to a reduced diameter rear passageway 34 at the back of nut 24 fig3 circular passageway 34 concentrically borders an annular non threaded internal ring groove 36 that borders an internal shoulder 37 proximate passageway 34 an elongated post 40 rotatably coaxially passes through the hex headed nut 24 in most f connector designs the metallic post 40 establishes electrical contact between the braid of the coax and the metallic nut 24 the tubular post 40 defines an elongated shank 41 with a coaxial internal passageway 42 extending between its front 43 and rear 44 shank 41 may or may not have barbs formed on it for engaging coaxial cable a front annular flange 46 fig3 is spaced apart from an integral reduced diameter flange 48 across a ring groove 50 a conventional resilient o ring 52 is optionally seated within post ring groove 50 when the connector 20 is assembled o ring 52 is preferably made of a silicone elastomer and its function is to provide a moisture seal preferably the post 40 has a barbed collar 54 comprising multiple external barbs 56 that are press fitted into the plastic body 60 described below in assembly it is noted that post flange 46 i e fig3 4 axially contacts inner shoulder 37 fig3 within nut 24 inner post flange 48.