FAR Part 51 Use of Government Sources by Contractors

Part Federal Acquisition Regulation

Part facts

Citation
FAR Part 51
Type
Part
Last amended
88 FR 25474 Effective May 26, 2023
Proposed changes
1
Text as of
FAC 2026-01
Official text
acquisition.gov

Text from acquisition.gov. Federal Register history from the Federal Register's records of the rules that amended this part.

Contents

  • 51.000 Scope of part
  • Subpart 51.1 Contractor Use of Government Supply Sources
    • 51.100 Scope of subpart
    • 51.101 Policy
    • 51.102 Authorization to use Government supply sources
    • 51.103 Ordering from Government supply sources
    • 51.104 Furnishing assistance to contractors
    • 51.105 Payment for shipments
    • 51.106 Title
    • 51.107 Contract clause
  • Subpart 51.2 Contractor Use of Interagency Fleet Management System (IFMS) Vehicles
    • 51.200 Scope of subpart
    • 51.201 Policy
    • 51.202 Authorization
    • 51.203 Means of obtaining service
    • 51.204 Use of interagency fleet management system (IFMS) vehicles and related services
    • 51.205 Contract clause

Federal Register history

Final rule Published Effective
Federal Acquisition Regulation: Removal of FAR Subpart 8.5, Acquisition of Helium 88 FR 25474 · FAC 2023-03
Federal Acquisition Regulation: Update to Title 10 Citations 87 FR 73894 · FAC 2023-01
Federal Acquisition Regulation; Technical Amendments 87 FR 49502 · FAC 2022-07
Federal Acquisition Regulation; Positive Law Codification of Title 41 79 FR 24192 · FAC 2005-73
Federal Acquisition Regulation; Government Property 77 FR 12937 · FAC 2005-56
Use of Government Sources by Contractors 73 FR 55450 Not on record
Federal Acquisition Regulation; FAR Case 2004-025, Government Property 72 FR 27364 · FAC 2005-17
Federal Acquisition Regulation; Technical Amendments 69 FR 76358 · FAC 2001-26
Federal Acquisition Regulation; Federal Supply Schedule Order Disputes and Incidental Items 67 FR 43514 · FAC 2001-08
Federal Acquisition Regulation; Technical Amendments 67 FR 6120 · FAC 2001-04
Federal Acquisition Regulation; ADP/Telecommunications Federal Supply Schedules 62 FR 44817 · FAC 97-01
Federal Acquisition Regulation; Javits-Wagner-O'Day Program (JWOD) 61 FR 2630 · FAC 90-37
Federal Acquisition Regulation; Contract Award Implementation 60 FR 42652 · FAC 90-31
Show all 13

Proposed changes

Proposed rule Published Comments
Federal Acquisition Regulation: Revolutionary FAR Overhaul Parts 8, 12, 13, 15, 38, 44, and 51 91 FR 59406 · FAR Case 2026-003, Docket No. FAR-2026-0003, Sequence No. 1 Closed Oct 19, 2026No final rule found

Quick answers

What is FAR Part 51?

FAR Part 51 is a part of the Federal Acquisition Regulation, titled "Use of Government Sources by Contractors".

When was FAR Part 51 last changed?

The most recent final rule on record is "Federal Acquisition Regulation: Removal of FAR Subpart 8.5, Acquisition of Helium" (88 FR 25474), published Apr 26, 2023 and effective May 26, 2023.

Are changes to FAR Part 51 proposed?

One proposed change has no final rule yet.

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