It comes with stainless steel screws for mounting and wall anchors. (happypetpost.com)
By not treating the wood stainless steel screws are avoided. (buildingscience.com)
Hardware includes chafes (buckles) and straps made of reinforced industrial Velcro that is attached to the device via stainless steel screws and lock washers (for ease of owner replacement). (orthopets.com)