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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 “substitution”

  • FAR 28.203-2 Substitution of assets.
    …ollowing the requirements set forth in 28.203-1, the contracting officer may agree to the substitution of assets upon determining that the substitute assets to be pledged are adequate to protect the outstanding bond or guarantee obligations…
  • FAR 28.106-2 Substitution of surety bonds.
    (a) A new surety bond covering all or part of the obligations on a bond previously approved may be substituted for the original bond if approved by the head of the contracting activity, or as otherwise specified in agency regulation. (b) W…
  • DFARS 252.219-7003 Small Business Subcontracting Plan (DoD Contracts).
    …all businesses, the Contractor shall notify the Administrative Contracting Officer of any substitutions of firms that are not small business firms, for the small business firms specifically identified in the subcontracting plan. Notificatio…
  • FAR 46.101 Definitions.
    …ntractual requirements. Counterfeit item means an unlawful or unauthorized reproduction, substitution, or alteration that has been knowingly mismarked, misidentified, or otherwise misrepresented to be an authentic, unmodified item from the…
  • FAR 52.246-26 Reporting Nonconforming Items.
    …r peculiar application. Counterfeit item means an unlawful or unauthorized reproduction, substitution, or alteration that has been knowingly mismarked, misidentified, or otherwise misrepresented to be an authentic, unmodified item from the…
  • DFARS 202.101 Definitions.
    …bcontractor. Counterfeit electronic part means an unlawful or unauthorized reproduction, substitution, or alteration that has been knowingly mismarked, misidentified, or otherwise misrepresented to be an authentic, unmodified electronic pa…
  • DFARS 252.246-7007 Contractor Counterfeit Electronic Part Detection and Avoidance System.
    …bcontractor. Counterfeit electronic part means an unlawful or unauthorized reproduction, substitution, or alteration that has been knowingly mismarked, misidentified, or otherwise misrepresented to be an authentic, unmodified electronic pa…
  • FAR 2.101 Definitions.
    …ision or clause is the basic provision or clause as changed by the addition, deletion, or substitution (see 52.105(a)). Architect-engineer services, as defined in 40 U.S.C. 1102, means— (1) Professional services of an architectural or eng…
  • FAR 8.102 Policy.
    …y obtaining and using excess personal property (including that suitable for adaptation or substitution) before initiating a contract action.
  • FAR 13.302-5 Clauses.
    …, or those clauses may be added separately. Modifications (i.e., additions, deletions, or substitutions) must not create a void or internal contradiction in the clause. For example, do not add an inspection and acceptance or termination for…
  • FAR 14.402-1 Unclassified bids.
    … supervision of a Government official and under conditions that preclude possibility of a substitution, addition, deletion, or alteration in the bid.
  • FAR 46.401 General.
    …cted at destination, but should be examined for quantity, damage in transit, and possible substitution or fraud. (e) Government inspection shall be performed by or under the direction or supervision of Government personnel. (f) Government…
  • FAR 46.503 Place of acceptance.
    …oses, but should be examined at destination for quantity, damage in transit, and possible substitution or fraud.
  • FAR 52.225-10 Notice of Buy American Requirement—Construction Materials.
    …t FAR 52.225-9. (2) If evaluation results in a tie between an offeror that requested the substitution of foreign construction material based on unreasonable cost and an offeror that did not request an exception, the Contracting Officer wil…
  • FAR 52.225-12 Notice of Buy American Requirement—Construction Materials Under Trade Agreements.
    …ause 52.225-11. (2) If evaluation results in a tie between an offeror that requested the substitution of foreign construction material based on unreasonable cost and an offeror that did not request an exception, the Contracting Officer wil…
  • FAR 52.244-4 Subcontractors and outside associates and consultants (Architect-engineer services).
    …. The Contractor shall obtain the Contracting Officer's written consent before making any substitution for these subcontractors, associates, or consultants. (End of clause)
  • FAR 52.245-1 Government Property.
    …property in a condition not suitable for its intended use. (3) An increase, decrease, or substitution of Government-furnished property. (4) Failure to repair or replace Government property for which the Government is responsible. (j) Con…
  • FAR 52.248-2 Value Engineering—Architect-Engineer.
    …nce of the team leader's qualifications and engineering discipline. Subsequent changes or substitutions to the approved VE team shall be submitted in writing to the Contracting Officer for approval; and (3) The team leader shall be respons…
  • DFARS 219.704 Subcontracting plan requirements.
    … businesses, prime contractors shall notify the administrative contracting officer of any substitutions of firms that are not small business firms, for the small business firms specifically identified in the subcontracting plan. Notificatio…

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.