A fixture having a cylindrical body, said body having an internal cavity extending from a first end to a second end, and said body having an exterior threaded portion, a flange affixed to the first end of the body, a portion of said flange extending past the circumference of the cylindrical body, said flange formed for receiving an electrical component, and a fastener complementary to the threaded portion, wherein the fastener and the flange are operable to secure the cylindrical body to a structure. An electrical component such as a luminaire, a switch or an electrical receptacle may be mounted into the flange portion of the fixture. A retainer may also be employed to distribute the load on the cylindrical body when positioned over the body and secured by the fastener.