The invention relates to a connection element, in particular a thermal adhesive bonding boss, to be introduced into at least one component, in particular a hollow chamber component, in particular a plate-shaped hollow chamber component which has hollow chambers, under the effect of pressure and rotation, comprising a main part which comprises a thermoplastic synthetic material. The connection element has a longitudinal axis and is designed to rotate about the longitudinal axis, and the connection element has an upper face with a tool placement point and a lower face which faces away from the upper face, wherein the connection element has an expanding portion made of a thermally activatable expandable material on the main part on a circumferential surface extending between the upper face and the lower face.

The invention relates to a connection element, in particular a thermal adhesive bonding boss, to be introduced into at least one component, in particular a hollow chamber component, in particular a plate-shaped hollow chamber component which has hollow chambers, under the effect of pressure and rotation, comprising a main part which comprises a thermoplastic synthetic material. The connection element has a longitudinal axis and is designed to rotate about the longitudinal axis, and the connection element has an upper face with a tool placement point and a lower face which faces away from the upper face, wherein the connection element has an expanding portion made of a thermally activatable expandable material on the main part on a circumferential surface extending between the upper face and the lower face.

A composite clip for attaching decking. The clip includes a bottom and a top. The bottom is made of a first material. The top is made of a second material. The first material of the bottom is different than the second material of the top. The first material of the bottom engages in the second material of the top during manufacturing so as to attach the bottom to the top and form the gangable composite clip without a need for any other means to attach the bottom to the top.

A composite clip for attaching decking. The clip includes a bottom and a top. The bottom is made of a first material. The top is made of a second material. The first material of the bottom is different than the second material of the top. The first material of the bottom engages in the second material of the top during manufacturing so as to attach the bottom to the top and form the gangable composite clip without a need for any other means to attach the bottom to the top.

A composite clip for attaching decking. The clip includes a bottom and a top. The bottom is made of a first material. The top is made of a second material. The first material of the bottom is different than the second material of the top. The first material of the bottom engages in the second material of the top during manufacturing so as to attach the bottom to the top and form the gangable composite clip without a need for any other means to attach the bottom to the top.