[Code of Federal Regulations] [Title 13, Volume 1] [Revised as of January 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 13CFR121.403] [Page 317] TITLE 13--BUSINESS CREDIT AND ASSISTANCE CHAPTER I--SMALL BUSINESS ADMINISTRATION PART 121--SMALL BUSINESS SIZE REGULATIONS--Table of Contents Subpart A--Size Eligibility Provisions and Standards Sec. 121.403 Are SBA size determinations and NAICS code designations binding on parties? Formal size determinations and NAICS code designations made by authorized SBA officials are binding upon the parties. Opinions otherwise provided by SBA officials to contracting officers or others are advisory in nature, and are not binding or appealable. [61 FR 3286, Jan. 31, 1996, as amended at 65 FR 30863, May 15, 2000]