FAR 46.101—Definitions.
Plain-English Summary
FAR 46.101 is the definitions section for the federal quality assurance and inspection framework in FAR Part 46. It explains the core terms that control how agencies inspect supplies and services, decide whether to accept or reject performance, and address quality problems after delivery. The section covers acceptance, conditional acceptance, contract quality requirements, counterfeit item, critical item, critical nonconformance, design activity, Government contract quality assurance, major nonconformance, minor nonconformance, off-the-shelf item, patent defect, subcontractor, suspect counterfeit item, and testing. In practice, these definitions matter because they determine when the Government takes ownership, what counts as a quality failure, how serious a defect is, who is responsible for design and quality control, and how counterfeit or suspect counterfeit items are handled. They also shape inspection methods, acceptance decisions, corrective action, and the allocation of risk between the Government and contractors.
Key Rules
Acceptance transfers ownership
Acceptance is the Government’s formal act of taking ownership of identified supplies or approving services as complete or partially complete performance. Once acceptance occurs, the Government generally assumes the item or service as delivered, subject to any rights it retains for latent defects, warranties, or other contract remedies.
Conditional acceptance allows correction
Conditional acceptance applies when supplies or services do not fully meet contract quality requirements or are incomplete, but the contractor must correct or complete them by a specified date. This lets the Government take delivery while preserving the requirement for later correction.
Contract quality requirements define compliance
Contract quality requirements include the technical requirements tied to product or service quality and the contract clauses that require inspection and other quality controls. These requirements are the benchmark for determining whether performance conforms to the contract.
Nonconformances are graded by severity
Major, minor, and critical nonconformances are distinguished by their likely effect on safety, mission performance, or usability. Critical nonconformances are the most serious, major nonconformances materially affect failure or usability, and minor nonconformances have little effect on intended use.
Counterfeit and suspect counterfeit items are distinct risks
A counterfeit item is an unlawful or unauthorized reproduction, substitution, or alteration knowingly misrepresented as authentic, including false claims about grade, serial number, lot number, date code, or performance. A suspect counterfeit item is one for which credible evidence creates reasonable doubt about authenticity, even if full proof is not yet established.
Design activity controls configuration responsibility
The design activity is the organization responsible for design and configuration, including maintaining design documents. This may be the original designer or a later organization that has been assigned design responsibility, which matters for technical authority and configuration control.
Government quality assurance includes inspection
Government contract quality assurance is the set of Government functions, including inspection, used to determine whether the contractor has met quality and quantity obligations. This definition supports the Government’s oversight role but does not replace the contractor’s own responsibility to deliver conforming work.
Off-the-shelf items are pre-stocked goods
An off-the-shelf item is one that was produced and placed in stock before any order or contract for its sale, whether commercial or made to military or Federal specifications. This definition helps distinguish readily available stocked items from items produced specifically for a particular procurement.
Patent defects are visible at acceptance
A patent defect is a defect existing at the time of acceptance that is not latent. This distinction matters because patent defects are generally discoverable at acceptance, while latent defects are hidden and may support later remedies.
Testing is a form of inspection
Testing is the inspection element that determines properties or functional performance through established scientific principles and procedures. It is used when visual or documentary review is not enough to verify compliance.
Responsibilities
Contracting Officer
Use these definitions to structure inspection, acceptance, and quality assurance decisions; determine whether to accept, conditionally accept, or reject performance; and ensure contract clauses and remedies align with the severity of nonconformances and counterfeit-item risks.
Government Quality Assurance Personnel
Perform inspection and testing as part of Government contract quality assurance, identify nonconformances, distinguish between major, minor, and critical issues, and document findings that support acceptance decisions or corrective action.
Contractor
Meet contract quality requirements, maintain internal quality controls, prevent counterfeit and suspect counterfeit items from entering the supply chain, correct conditional acceptance items by the required date, and ensure delivered supplies and services conform to contract requirements.
Design Activity
Maintain design responsibility and configuration control, keep design documents current, and provide authoritative technical direction on the item’s design and configuration when responsibility has been assigned or transferred.
Subcontractor
Perform work in accordance with applicable quality requirements and flowdown obligations, and support the prime contractor’s compliance with inspection, testing, and counterfeit-prevention requirements.
Agency
Establish and apply quality assurance policies, inspection practices, and counterfeit-risk controls consistent with these definitions, especially for critical items and mission-essential supplies or services.
Practical Implications
These definitions drive how a contracting officer writes inspection and acceptance clauses, because the meaning of acceptance, conditional acceptance, and contract quality requirements determines when the Government can take delivery and when the contractor must fix problems.
The severity of a nonconformance matters a great deal in day-to-day administration: a critical nonconformance can trigger urgent corrective action, while a minor one may be documented without stopping acceptance, depending on the contract and circumstances.
Counterfeit-item language is especially important in supply chains with brokers, distributors, or hard-to-source parts; contractors should maintain traceability, authenticity checks, and documentation to avoid delivering suspect or counterfeit items.
Patent defect versus latent defect is a common source of disputes after acceptance, so both sides should document inspection results carefully at delivery and preserve records showing what was or was not discoverable at the time of acceptance.
Off-the-shelf status can affect expectations for inspection, lead time, and sourcing, but it does not eliminate the need to meet contract requirements or protect against counterfeit parts and quality failures.
Official Regulatory Text
As used in this part- Acceptance means the act of an authorized representative of the Government by which the Government, for itself or as agent of another, assumes ownership of existing identified supplies tendered or approves specific services rendered as partial or complete performance of the contract. Conditional acceptance means acceptance of supplies or services that do not conform to contract quality requirements, or are otherwise incomplete, that the contractor is required to correct or otherwise complete by a specified date. Contract quality requirements means the technical requirements in the contract relating to the quality of the product or service and those contract clauses prescribing inspection, and other quality controls incumbent on the contractor, to assure that the product or service conforms to the contractual 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 original manufacturer, or a source with the express written authority of the original manufacturer or current design activity, including an authorized aftermarket manufacturer. Unlawful or unauthorized substitution includes used items represented as new, or the false identification of grade, serial number, lot number, date code, or performance characteristics. Critical item means an item, the failure of which is likely to result in hazardous or unsafe conditions for individuals using, maintaining, or depending upon the item; or is likely to prevent performance of a vital agency mission. Critical nonconformance means a nonconformance that is likely to result in hazardous or unsafe conditions for individuals using, maintaining, or depending upon the supplies or services; or is likely to prevent performance of a vital agency mission. Design activity means an organization, Government or contractor, that has responsibility for the design and configuration of an item, including the preparation or maintenance of design documents. Design activity could be the original organization, or an organization to which design responsibility has been transferred. Government contract quality assurance means the various functions, including inspection, performed by the Government to determine whether a contractor has fulfilled the contract obligations pertaining to quality and quantity. Major nonconformance means a nonconformance, other than critical, that is likely to result in failure of the supplies or services, or to materially reduce the usability of the supplies or services for their intended purpose. Minor nonconformance means a nonconformance that is not likely to materially reduce the usability of the supplies or services for their intended purpose, or is a departure from established standards having little bearing on the effective use or operation of the supplies or services. Off-the-shelf item means an item produced and placed in stock by a contractor, or stocked by a distributor, before receiving orders or contracts for its sale. The item may be commercial or produced to military or Federal specifications or description. Patent defect means any defect which exists at the time of acceptance and is not a latent defect. Subcontractor (see 44.101 ). Suspect counterfeit item means an item for which credible evidence (including but not limited to, visual inspection or testing) provides reasonable doubt that the item is authentic. Testing means that element of inspection that determines the properties or elements, including functional operation of supplies or their components, by the application of established scientific principles and procedures.