CFR›Title 48›Chapter 2›Part 251 ContainsSubparts 251.1–251.2CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 PART 251—USE OF GOVERNMENT SOURCES BY CONTRACTORS Subparts 251.1 Subpart 251.1—Contractor Use of Government Supply Sources Sections 251.101–251.107 251.2 Subpart 251.2—Contractor Use of Interagency Fleet Management System (IFMS) Sections 251.202–251.205 Authority41 U.S.C. 1303 and 48 CFR chapter 1.Source56 FR 36479, July 31, 1991, unless otherwise noted. Previous 250 Part 250—Extraordinary Contractual Actions and the SAFETY Act Next 252 Part 252—Solicitation Provisions and Contract Clauses