CFR›Title 48›Chapter 5›Part 515 ContainsSubparts 515.2–515.4CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 515—CONTRACTING BY NEGOTIATION Subparts 515.2 Subpart 515.2—Solicitation and Receipt of Proposals and Information Sections 515.204–515.209-70 515.3 Subpart 515.3—Source Selection Sections 515.305–515.305-70 515.4 Subpart 515.4—Contract Pricing Section 515.408 Authority40 U.S.C. 121(c).Source64 FR 37214, July 9, 1999, unless otherwise noted. Previous 514 Part 514—Sealed Bidding Next 516 Part 516—Types of Contracts