FAR and DFARS › FAR Part 51: Use of Government Sources by Contractors › Subpart 51.1

FAR 51.100 Scope of subpart.

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.

The text

This subpart prescribes policies and procedures for the use of Government supply sources (see 51.102(c)) by contractors. In this subpart, the terms contractors and contracts include subcontractors and subcontracts.

Sections it refers to

51.102 Authorization to use Government supply sources.

← 51.000 Scope of part. · 51.101 Policy. →

Rule changes for FAR Part 51

Federal Acquisition Regulation: Revolutionary FAR Overhaul Parts 8, 12, 13, 15, 38, 44, and 51 ↗ · proposed 2026-09-18 · comments due 2026-10-19

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.