Certain embodiments of the present invention provide a stackable mount assembly that includes indexing and/or locking features. The stackable mount assembly includes a plurality of mounts. Each mount includes a hub and a fastener. Indexing features prevent the hub from freely rotating about the fastener, but allow the hub to index or rotate about the fastener at an index angle. The locking features prevent the hub from rotating about the fastener, locking the hub in a desired position and/or orientation.