[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: 31CFR363.176] [Page 501] 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 E_Conversion of a Definitive Savings Bond Sec. 363.176 May a converted savings bond be pledged or used as collateral? A converted savings bond may not be pledged or used as collateral for the performance of an obligation.