CFR›Title 48›Chapter 6›Part 637 ContainsSubparts 637.1–637.6CorpusDaily eCFRDisplayed edition2026-05-08Last updated2026-05-08 PART 637—SERVICE CONTRACTING Subparts 637.1 Subpart 637.1—Service Contracts—General Sections 637.102–637.110 637.2 Subpart 637.2—Advisory and Assistance Services Section 637.204 637.6 Subpart 637.6—Performance-Based Contracting Section 637.601 Authority22 U.S.C. 2651a, 40 U.S.C. 121(c) and 48 CFR chapter 1.Source53 FR 26176, July 11, 1988, unless otherwise noted. Previous 636 Part 636—Construction and Architect-Engineer Contracts Next 639 Part 639—Acquisition of Information Technology