Abstract: Disclosed is a method of interlocking the rails of a railing, fence or the like with the ends of the hollow posts thereof. Also disclosed is the joint construction used with said method. The method and the joint construction make possible easy interlocking without the use of rivets, bolts and nuts, or welding and can be effectively applied to the assembling of tubular railings made from aluminum by extrusion molding. When the joint is to be provided between a post and a rail base which passes over or under one end of the post, a stud having a head is pushed through a hole provided in the rail base into the end of the hollow post and a self-tapping screw is threaded into a gap between the stud and the inner wall of the post to fix them. The shape of the stud head is made such that it does not obstruct the threading of the self-tapping screw.

Abstract: Disclosed is a method of interlocking the rails of a railing, fence or the like with the ends of the hollow posts thereof. Also disclosed is the joint construction used with said method. The method and the joint construction make possible easy interlocking without the use of rivets, bolts and nuts, or welding and can be effectively applied to the assembling of tubular railings made from aluminum by extrusion molding. When the joint is to be provided between a post and a rail base which passes over or under one end of the post, a stud having a head is pushed through a hole provided in the rail base into the end of the hollow post and a self-tapping screw is threaded into a gap between the stud and the inner wall of the post to fix them. The shape of the stud head is made such that it dos not obstruct the threading of the self-tapping screw.