Except for the exemptions at 22.604, all contracts subject to 41 U.S.C. chapter 65 (the statute), and entered into by any executive department, independent establishment, or other agency or instrumentality of the United States, or by the District of Columbia, or by any corporation (all the stock of which is beneficially owned by the United States) for the manufacture or furnishing of materials, supplies, articles, and equipment (referred to in this subpart as supplies) in any amount exceeding $15,000, shall include or incorporate by reference the stipulations required by the statute pertaining to such matters as minimum wages, maximum hours, child labor, convict labor, and safe and sanitary working conditions.