This disclosure is directed to electrical connectors that include a connector body having an inlet end opening and an outlet end portion wherein the outlet end portion is provided with an outer surface that slopes downwardly toward the outlet opening and having a complementary sloping or frustro-conical, snap fit, retaining ring with locking tangs and grounding tangs for snap locking the outlet end portion to an electric box or enclosure, and including an embodiment having a cable strap retainer hingedly connected to an associated cable support saddle to render the cable strap retainer readily detachable from the saddle in a manner that prohibits any unintentional detachment of the strap therefrom when rotated between a cable clamping and unclamping position suitable for securing thereto either a non-metallic cable or an armored or metal clad cable, wire conductor and the like.