Section 1726.27 - Contractor's bonds(a) RUS Form 168b, Contractor's Bond, shall be used when a contractor's bond is required by RUS Forms 200, 257, 786, 790, or 830 unless the contractor's surety has accepted a Small Business Administration guarantee and the contract is for $1 million or less.(b) RUS Form 168c, Contractor's Bond, shall be used when a contractor's bond is required by RUS Forms 200, 257, 786, 790, or 830 and the contractor's surety has accepted a Small Business Administration guarantee and the contract is for $1 million or less.(c) Surety companies providing contractor's bonds shall be listed as acceptable sureties in the U.S. Department of the Treasury Circular No. 570, Companies Holding Certificates of Authority as Acceptable Sureties on Federal Bonds and as Acceptable Reinsuring Companies. Copies of the circular and interim changes may be obtained directly from the Government Printing Office (202) 512-1800. Interim changes are published in the FEDERAL REGISTER as they occur. The list is also available through the Internet at http://www.fms.treas.gov/c570/index.html and on the Department of the Treasury's computerized public bulletin board at (202) 874-6887.63 FR 58286, Oct. 30, 1998, as amended at 69 FR 7109 , Feb. 13, 2004