Abstract: An improved heat insulated tie rod allowing to reduce local heat insulation defects of concrete or stratified, concrete wall members. The tie rod includes stoppers for setting and holding together a pair of frame walls in spaced apart relationship with, if desired, a heat insulating panel therebetween. The tie rod is improved in that it is made of two coaxial portions connected to each other through a central, heat insulated body having a high resistance to crushing. Preferably, each tie rod portion has a looped end surrounding the central body which can be a block of hardwood.