When a program office concludes that domestically melted or produced specialty metal cannot be procured (as described in DFARS 225.7003-3(b)(5)) to support the production of a particular end item or component, the contracting officer must prepare a DNAD D&F for specialty metals. The SecAF may approve a DNAD for an individual contract if a compliant specialty metal of satisfactory quality and sufficient quantity, and in the required form, cannot be procured as and when needed at a fair and reasonable price. This approval authority is not delegable. A Class DNAD requires the approval of the USD(A&S).