Series H bonds are subject to the regulations of the Department of the Treasury, now or hereafter prescribed, governing United States Savings bonds of Series A, B, C, D, E, F, G, H, J and K, contained in 31 CFR part 315 , also published as Department of the Treasury Circular No. 530, current revisions, except as otherwise specifically provided herein.
31 C.F.R. §332.3