CFR›Title 48›Chapter 6›Part 639 ContainsSubpart 639.1CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 639—ACQUISITION OF INFORMATION TECHNOLOGY Subparts 639.1 Subpart 639.1—General Sections 639.107–639.107-70 Authority40 U.S.C. 486(c); 22 U.S.C. 2658.Source72 FR 51569, Sept. 10, 2007, unless otherwise noted. Previous 637 Part 637—Service Contracting Next 641 Part 641—Acquisition of Utility Services