Is hereby provided a method of securing a plastic part to a composite structure, the method comprising providing a composite structure, performing at least one hole in the composite structure, providing a plastic part including a surface and at least one pin extending therefrom, the at least one pin being sized and designed to mate with the at least one hole to create a clamping force capable of temporarily securing the plastic part to the composite structure, applying bonding material between the surface and the composite structure to bond the surface to the composite structure, engaging the at least one pin with the corresponding at least one hole and adding pressure to engage the at least one pin with the corresponding at least one hole and spreading the bonding material between the plastic part and the composite structure, and curing the bonding material to permanently secure the additional part to the composite structure. A plastic part adapted to be secured to a composite structure with pins thereof and a composite materials galley cart comprising parts secured thereof with pins are also hereby provided.