48 CFR · Federal Acquisition Regulation and Defense supplement

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The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.

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2 sections with “indispensable for national security or national defense purposes”

  • DFARS 225.401 Exceptions.
    …a)(2)(A) If a department or agency considers an individual acquisition of a product to be indispensable for national security or national defense purposes and appropriate for exclusion from the provisions of FAR subpart 25.4, it may submit …
  • FAR 25.401 Exceptions.
    …r small businesses; (2) Acquisitions of arms, ammunition, or war materials, or purchases indispensable for national security or for national defense purposes; (3) Acquisitions of end products for resale; (4) Acquisitions from Federal Pri…

FAR (chapter 1)

DFARS (chapter 2, Defense)

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Rule changes in progress: FAR, DFARS. Terms: glossary.