A new type of interlocking timber-to-timber connection was designed to simplify the structural details and the mounting conditions between wall elements and ceilings or floor panels in timber frame constructions. An experimental test series on different connector geometries was performed due to the unclear component behaviour and failure mechanism in mode II. The connection types achieved sufficient capacity but do not reach the predicted loads according to EC5. Thus, a mixed mode failure of mode I and II obviously occurs. A design approach is provided recognising all influences on the load-bearing capacity.