CFR›Title 41›Subtitle B›Chapter 51›Part 51-4 ContainsSections 51-4.1–51-4.5CorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 PART 51-4—NONPROFIT AGENCIES Sections 51-4.1 § 51-4.1 General. 51-4.2 § 51-4.2 Initial qualification. 51-4.3 § 51-4.3 Maintaining qualification. 51-4.4 § 51-4.4 Subcontracting. 51-4.5 § 51-4.5 Violations by nonprofit agencies. Authority41 U.S.C. 46-48c.Source56 FR 48980, Sept. 26, 1991, unless otherwise noted. Previous 51-3 Part 51-3—Central Nonprofit Agencies Next 51-5 Part 51-5—Contracting Requirements