[Code of Federal Regulations] [Title 31, Volume 2] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 31CFR363.58] [Page 494] TITLE 31--MONEY AND FINANCE: TREASURY CHAPTER II--FISCAL SERVICE, DEPARTMENT OF THE TREASURY PART 363_REGULATIONS GOVERNING SECURITIES HELD IN TREASURYDIRECT--Table of Contents Subpart C_Book-Entry Savings Bonds Purchased Through TreasuryDirect Sec. 363.58 May book-entry savings bonds be pledged or used as collateral? Bonds may not be pledged or used as collateral for the performance of an obligation.