Abstract: The present invention relates generally to a furniture support structure that can be used, for example, on beds, desks, tables, chairs, and other furniture. In some embodiments, a furniture support structure comprises a hollow elongated metal tube having a first end and a second end, wherein the first end is crimped and comprises a hollow circular cross-section and wherein at least a portion of the inner surface of the hollow circular cross-sectional portion of the first end is threaded. Some embodiments of the present invention also relate to devices for adjusting the height of a furniture item.