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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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19 sections with “national defense reasons”

  • DFARS 252.204-7018 Prohibition on the Acquisition of Covered Defense Telecommunications Equipment or Services.
    …es or defense services included on the United States Munitions List set forth in the International Traffic in Arms Regulations under subchapter M of chapter I of title 22, Code of Federal Regulations; (2) Items included on the Commerce Con…
  • FAR 52.204-25 Prohibition on Contracting for Certain Telecommunications and Video Surveillance Services or Equipment.
    …vernment facilities, physical security surveillance of critical infrastructure, and other national security purposes, video surveillance and telecommunications equipment produced by Hytera Communications Corporation, Hangzhou Hikvision Digi…
  • FAR 4.2101 Definitions.
    …vernment facilities, physical security surveillance of critical infrastructure, and other national security purposes, video surveillance and telecommunications equipment produced by Hytera Communications Corporation, Hangzhou Hikvision Digi…
  • FAR 32.304-2 Certificate of eligibility.
    …guarantee would be in the Government's interest. (c) If the contractor has several major national defense contracts, it is normally not necessary to evaluate the eligibility of relatively minor contracts. The determination of eligibility s…
  • DFARS 225.872-1 General.
    (a) As a result of memoranda of understanding and other international agreements, DoD has determined it inconsistent with the public interest to apply restrictions of the Buy American statute or the Balance of Payments Program to the acquis…
  • DFARS 252.203-7001 Prohibition on Persons Convicted of Fraud or Other Defense-Contract-Related Felonies.
    …s for the requested waiver; and (4) An explanation of why a waiver is in the interest of national security. (g) Subcontracts. The Contractor agrees to include the substance of this clause, appropriately modified to reflect the identity an…
  • DFARS 234.004 Acquisition strategy.
    …f lead system integrators. (2) Contract type. (i) In accordance with section 818 of the National Defense Authorization Act for Fiscal Year 2007 (Pub. L. 109-364), for major defense acquisition programs at Milestone B— (A) The milestone d…
  • DFARS 239.7304 Determination and notification.
    …ment, that— (1) Use of the authority in 239.7305(a), (b), or (c) is necessary to protect national security by reducing supply chain risk; (2) Less intrusive measures are not reasonably available to reduce such supply chain risk; and (3) …
  • FAR 52.244-2 Subcontracts.
    …xceeds— (i) For a contract awarded by the Department of Defense, the Coast Guard, or the National Aeronautics and Space Administration, the greater of the simplified acquisition threshold, as defined in FAR 2.101 on the date of subcontract…
  • DFARS 227.7004 Requirements for filing an administrative claim for patent infringement.
    …vocate General; (4) For the Defense Logistics Agency—the Office of Counsel; (5) For the National Security Agency—the General Counsel; (6) For the Defense Information Systems Agency—the Counsel; (7) For the Defense Threat Reduction Agenc…
  • DFARS 252.237-7019 Training for Contractor Personnel Interacting with Detainees.
    …act with detainees. (b) Training requirement. This clause implements Section 1092 of the National Defense Authorization Act for Fiscal Year 2005 (Pub. L. 108-375). (1) The Combatant Commander responsible for the area where a detention or …
  • FAR 9.202 Policy.
    …r— (1) Is not on a QPL, QML, or QBL maintained by the Department of Defense (DoD) or the National Aeronautics and Space Administration (NASA); or (2) Has not been identified as meeting a qualification requirement established after October…
  • FAR 32.006-4 Procedures.
    …rformance if payments are reduced or suspended; (4) The contractor's essentiality to the national defense, or to the execution of the agency's official business; and (5) Assessment of all documentation concerning the alleged fraud, includ…
  • FAR 50.104-3 Special procedures for unusually hazardous or nuclear risks.
    …A statement by responsible authority that the indemnification action would facilitate the national defense; (iv) A statement that the contract will involve unusually hazardous or nuclear risks that could impose liability upon the contracto…
  • FAR 52.204-23 Prohibition on Contracting for Hardware, Software, and Services Developed or Provided by Kaspersky Lab Covered Entities.
    …spersky Lab has a majority ownership. (b) Prohibition. Section 1634 of Division A of the National Defense Authorization Act for Fiscal Year 2018 (Pub. L. 115-91) prohibits Government use of any Kaspersky Lab covered article. The Contractor…
  • DFARS 209.405 Effect of listing.
    …es the department or agency decision not to debar or suspend the contractor; or (iv) The national defense requires continued business dealings with the debarred or suspended contractor. (b)(i) The Procurement Cause and Treatment Code “H” …
  • DFARS 209.570-3 Procedures.
    …integrator functions over the shortest period of time consistent with the interest of the national defense; and (3) Shall be provided to the Committees on Armed Services of the Senate and the House of Representatives at least 45 days befor…
  • DFARS 217.172 Multiyear contracts for supplies.
    … to the conditions listed in FAR 17.105-1(b), the use of such a contract will promote the national security of the United States (10 U.S.C. 3501(a)(6)). (c) Multiyear contracts in amounts exceeding $900 million must be specifically authori…
  • DFARS 225.770-5 Waiver of prohibition.
    … identified in paragraph (b) of this subsection determines that a waiver is necessary for national security purposes. (b) The following officials are authorized, without power of delegation, to make the determination specified in paragraph…

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.