The machined aluminum Anchor Flange Assembly (75-209-5000) provide a suitable mounting point when surface mounting light to moderate duty residential and light duty commercial equipment whose outer diameter tubing is 1.90" (48.3). The base is symmetrically predrilled to accept four mounting bolts of a diameter of 1/4" (.25"/6.35mm) (not included). In addition, either side of the mounting tube is predrilled at approximately 1" (25.4mm) below the top of the mounting tube. Mounting of equipment is accomplished by properly aligning these holes with the matching holes in equipment and securing with a 2.75" (69.9mm) long bolt. This carbon steel bolt, a bushing, two washers and a lock nut (U.S. thread) are included with the anchor socket.