A test setup has been developed that simulates thermal stresses in a hybrid bolted joint designed to fail in bearing. The setup applies biaxial loading to fasteners in a double lap bolted joint. A furnace has been built that applies 90 oC elevated temperature during testing. Biaxial grip displacement is measured with high accuracy. Specimens were tested with biaxial loading and without biaxial loading. Specimens were both quasi-statically loaded and fatigue loaded. For biaxially loaded joints an effective bearing stress can be calculated from Pythagoras theorem. When the effective bearing stress is used for comparison on quasi-static loaded joints, both the damage initiation and bearing failure occurs at similar stress levels for biaxially loaded joints and joints that are not biaxially loaded. When biaxial load is applied the bearing failure occurs at about 45 degrees angle to the vertical load direction. When the effective bearing stress is used for comparison on fatigue loaded joints the fatigue life for not biaxially loaded joints is slightly shorter than for biaxially loaded joints. This indicates that the effective bearing stress is a conservative method to predict fatigue life for biaxially loaded joints and thermally loaded hybrid joints.