In modern space devices, a significant number of parts and assemblies of various shapes are in contact interaction. Moreover, the materials from which they are made often differ in thermophysical and mechanical properties. When designing such connections, it becomes necessary to be able to reliably carry out thermal and strength calculations, both for the entire structure as a whole, and for individual contact nodes, with the possibility of adjusting their characteristics. As a tool for regulating the conductivity of contacts, the use of coatings of contacting surfaces can be used. Modeling a metal-coating-metal contact pair allows you to optimally select the coating material and its required thickness.