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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47 sections with “subsystem”: the first 40

  • DFARS 207.106 Additional requirements for major systems.
    ….S.C. 3774(a) and DoD policy requirements, acquisition plans for major weapon systems and subsystems of major weapon systems shall— (i) Assess the long-term technical data and computer software needs of those systems and subsystems; and (…
  • DFARS 234.7002 Policy.
    …his section may not be delegated below the level of the Deputy Secretary of Defense. (b) Subsystems. A subsystem of a major weapon system (other than a commercially available off-the-shelf item) shall be treated as a commercial product and…
  • DFARS 252.215-7010 Requirements for Certified Cost or Pricing Data and Data Other Than Certified Cost or Pricing Data.
    …at rendered such determination, and if available, a Government point of contact; (B) For subsystems of a major weapon system and components and spare parts of a major weapon system or subsystem of a major weapon system that have not previo…
  • DFARS 252.225-7009 Restriction on Acquisition of Certain Articles Containing Specialty Metals.
    … or more of the alloy (by mass). Assembly means an item forming a portion of a system or subsystem that— (i) Can be provisioned and replaced as an entity; and (ii) Incorporates multiple, replaceable parts. Commercial derivative military…
  • DFARS 225.7003-3 Exceptions.
    …ar, billet, slab, wire, plate, and sheet, that have not been incorporated into end items, subsystems, assemblies, or components. Specialty metal supply contracts issued by COTS producers are not subcontracts for the purposes of this excepti…
  • DFARS 252.225-7052 Restriction on the Acquisition of Certain Magnets, Tantalum, and Tungsten.
    …nitions. As used in this clause— Assembly means an item forming a portion of a system or subsystem that— (1) Can be provisioned and replaced as an entity; and (2) Incorporates multiple, replaceable parts. Commercially available off-the-…
  • DFARS 252.246-7003 Notification of Potential Safety Issues.
    …nt has occurred or will occur. Critical safety item means a part, subassembly, assembly, subsystem, installation equipment, or support equipment for a system that contains a characteristic, any failure, malfunction, or absence of which cou…
  • FAR 7.105 Contents of written acquisition plans.
    … why full and open competition cannot be obtained. (ii) Identify the major components or subsystems. Discuss component breakout plans relative to these major components or subsystems. Describe how competition will be sought, promoted, and …
  • FAR 2.101 Definitions.
    … information. Information technology means any equipment, or interconnected system(s) or subsystem(s) of equipment, that is used in the automatic acquisition, storage, analysis, evaluation, manipulation, management, movement, control, disp…
  • FAR 34.005-2 Mission-oriented solicitation.
    …te that each offeror is free to propose its own technical approach, main design features, subsystems, and alternatives to schedule, cost, and capability goals. (6) Require the use of an Earned Value Management System that complies with the…
  • FAR 52.219-8 Utilization of Small Business Concerns.
    …S.C. 101(16), and who is registered in the Beneficiary Identification and Records Locator Subsystem, or successor system that is maintained by the Department of Veterans Affairs' Veterans Benefits Administration, as a service-disabled veter…
  • DFARS 209.571-6 Identification of organizational conflicts of interest.
    …ontractor for the same major defense acquisition program; or (2) The supplier of a major subsystem or component for the same major defense acquisition program. (b) The proposed award of a major subsystem by a prime contractor to business …
  • DFARS 212.102 Applicability.
    …ial product” or “commercial service” definition in FAR 2.101. See 234.7002(b) and (c) for subsystems of major weapon systems and components and spare parts of major weapon systems and of subsystems of major weapon systems; (B) Include the …
  • DFARS 212.209 Determination of price reasonableness.
    …h market research, the contracting officer— (1) In the case of major weapon systems, for subsystems of major weapon systems and components and spare parts of major weapon systems and of subsystems of major weapon systems acquired as commer…
  • DFARS 215.403-1 Prohibition on obtaining certified cost or pricing data (10 U.S.C. chapter 271 and 41 U.S.C. chapter 35).
    …commercial products or commercial services, except see 234.7002(e) for pricing commercial subsystems of major weapon systems and components and spare parts of major weapon systems and of subsystems of major weapon systems. (B) When applyin…
  • DFARS 225.7001 Definitions.
    As used in this subpart— Assembly means an item forming a portion of a system or subsystem that— (1) Can be provisioned and replaced as an entity; and (2) Incorporates multiple, replaceable parts. Bearing components means the bearing el…
  • DFARS 225.7018-3 Exceptions.
    …, sphere, block, blank, plate, or sheet, that has not been incorporated into an end item, subsystem, assembly, or component; or (iii) Effective January 1, 2027, a covered material that is a mill product such as bar, billet, slab, wire, cub…
  • DFARS 246.370 Notification of potential safety issues.
    … (1) Repairable or consumable parts identified as critical safety items; (2) Systems and subsystems, assemblies, and subassemblies integral to a system; or (3) Repair, maintenance, logistics support, or overhaul services for systems and s…
  • FAR 4.2201 Definitions.
    …y, as defined in 40 U.S.C. 11101(6)— (1) Means any equipment or interconnected system or subsystem of equipment, used in the automatic acquisition, storage, analysis, evaluation, manipulation, management, movement, control, display, switch…
  • FAR 7.101 Definitions.
    …new systems, or for modifications to existing systems that involve redesign of systems or subsystems. Life-cycle cost means the total cost to the Government of acquiring, operating, supporting, and (if applicable) disposing of the items be…
  • FAR 15.407-2 Make-or-buy programs.
    …ake-or-buy program in negotiated contracts for— (1) Major systems (see part 34) or their subsystems or components, regardless of contract type; or (2) Other supplies and services if— (i) The contract is a cost-reimbursable contract, or a…
  • FAR 27.409 Solicitation provisions and contract clauses
    … major system and contracts for any individual part, component, subassembly, assembly, or subsystem integral to the major system, and other property that may be replaced during the service life of the system, including spare parts. When use…
  • FAR 34.101 Definitions.
    … as used in this subpart, means any individual part, component, subassembly, assembly, or subsystem integral to a major system, and other property which may be replaced during the service life of the system. The term includes spare parts an…
  • FAR 42.202 Assignment of contract administration.
    …itions (see part 34), the contracting officer may designate certain high risk or critical subsystems or components for special surveillance in addition to requesting supporting contract administration. This surveillance shall be conducted i…
  • FAR 43.107 Contract clause.
    … development or supply contracts for the acquisition of major weapon systems or principal subsystems. If the contract amount is expected to be less than $1,000,000, the clause shall not be used, unless the contracting officer anticipates th…
  • FAR 44.201-1 Consent requirements.
    …e subcontract needs special surveillance. These can be subcontracts for critical systems, subsystems, components, or services. Subcontracts may be identified by subcontract number or by class of items (e.g., subcontracts for engines on a pr…
  • FAR 52.204-27 Prohibition on a ByteDance Covered Application.
    …y, as defined in 40 U.S.C. 11101(6)— (1) Means any equipment or interconnected system or subsystem of equipment, used in the automatic acquisition, storage, analysis, evaluation, manipulation, management, movement, control, display, switch…
  • FAR 52.212-3 Offeror Representations and Certifications—Commercial Products and Commercial Services.
    …S.C. 101(16), and who is registered in the Beneficiary Identification and Records Locator Subsystem, or successor system that is maintained by the Department of Veterans Affairs' Veterans Benefits Administration, as a service-disabled veter…
  • FAR 52.219-1 Small Business Program Representations.
    …S.C. 101(16), and who is registered in the Beneficiary Identification and Records Locator Subsystem, or successor system that is maintained by the Department of Veterans Affairs' Veterans Benefits Administration, as a service-disabled veter…
  • FAR 52.219-27 Notice of Set-Aside for, or Sole-Source Award to, Service-Disabled Veteran-Owned Small Business (SDVOSB) Concerns Eligible Under the SDVOSB Program.
    ….S.C. 101(16) and who is registered in the Beneficiary Identification and Records Locator Subsystem, or successor system that is maintained by the Department of Veterans Affairs' Veterans Benefits Administration, as a service-disabled veter…
  • DFARS 202.101 Definitions.
    …y require or agree to permit the customer to produce in its country certain components or subsystems of the item being sold. Generally, direct offsets must be performed within a specified period, because they are integral to the deliverable…
  • DFARS 207.171-2 Definition.
    Component, as used in this section, includes subsystems, assemblies, subassemblies, and other major elements of an end item; it does not include elements of relatively small annual acquisition value.
  • DFARS 208.7003-2 Assignments under coordinated acquisition.
    …ntrolled by and acquired from either the system manufacturer or a manufacturer of a major subsystem; (k) Items subject to rapid design changes, or to continuous redesign or modification during the production and/or operational use phases, …
  • DFARS 209.571-1 Definitions.
    …he time of award to perform a substantial portion of the work on the system and the major subsystems. (ii) Lead system integrator without system responsibility means a prime contractor under a contract for the procurement of services, the …
  • DFARS 212.001 Definitions.
    As used in this part— Market research means a review of existing systems, subsystems, capabilities, and technologies that are available or could be made available to meet the needs of DoD in whole or in part. The review shall include, at a…
  • DFARS 223.7304 Exceptions.
    …e prohibition in 223.7303 does not apply to— (a) Legacy systems and their related parts, subsystems, and components that already contain hexavalent chromium. However, alternatives to hexavalent chromium shall be considered by the appropria…
  • DFARS 227.7103-1 Policy.
    …s not satisfy mobilization needs. (f) For acquisitions involving major weapon systems or subsystems of major weapon systems, the acquisition plan shall address acquisition strategies that provide for technical data and the associated licen…
  • DFARS 227.7203-1 Policy.
    …e the software may be restricted. (e) For acquisitions involving major weapon systems or subsystems of major weapon systems, the acquisition plan shall address acquisition strategies that provide for computer software and computer software…
  • DFARS 227.7203-14 Conformity, acceptance, and warranty of computer software and computer software documentation.
    …ies—(i) Weapon systems. Computer software that is a component of a weapon system or major subsystem should be warranted as part of the weapon system warranty. Follow the procedures at 246.7. (ii) Non-weapon systems. Approval of the chief o…
  • DFARS 235.006 Contracting methods and contract type.
    …tem; the development of a major system (as defined in FAR 2.101); or the development of a subsystem of a major system; or (ii) By the contracting officer for any development not covered by paragraph (b)(ii)(A)(3)(i) of this section. (B) O…

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.