The invention relates to a framed art hanging system for hanging pictures and other similar items such as art, photos, diplomas, posters, paintings and framed sports memorabilia on walls. The system allows the installer of a framed picture to easily hang the picture utilizing the combination of a magnetic connection and a mechanical connection. The magnetic connection is achieved by utilizing a magnet, preferably adhered to a plate which is attached to either the back of the picture frame or to the wall and a metal plate which is magnetically attracted to the magnet, the metal plate being placed on the other location (either the back of the picture frame or to the wall). Three example ways to achieve a mechanical connection are described. The first way is to place an abrasive coating on either the frame plate or the magnet plate and a deformable substance coating on the other. The second way is to combine fins and grooves, one being placed on the frame plate and the other being placed on the magnet plate. The last way is to utilize geometric protrusions and depressions, one being placed on the frame plate and the other being placed on the magnet plate.

A bolted joint for coupling two components that undergo thermal expansion and contraction includes a bolt having a head and a stem, the bolt configured to provide a clamping force between the two components. A first washer having a thermal resistant, low friction coating is configured to be disposed between one of the two components and the bolt head to enable the one component to slide relative to the bolt during the thermal expansion and contraction, while maintaining the clamping force, to facilitate preventing bending or shearing of the bolt.