CFR›Title 31›Subtitle B›Chapter II›Part 353›Subpart A ContainsSections 353.0–353.3CorpusDaily eCFRDisplayed edition2026-04-28Last updated2026-04-28 Subpart A—General Information Sections 353.0 § 353.0 Applicability. 353.1 § 353.1 Official agencies. 353.2 § 353.2 Definitions. 353.3 § 353.3 Converting definitive savings bonds to book-entry bonds in TreasuryDirect®. Next B Subpart B—Registration