15 C.F.R. § 280.201
(b) Sale of fasteners. It shall be unlawful for a manufacturer or distributor, in conjunction with the sale or offer for sale of fasteners from a single lot, to knowingly misrepresent or falsify—
(c) Manufacturers' insignia. Unless the specifications provide otherwise, fasteners that are required by the applicable consensus standard or standards to bear an insignia identifying their manufacturer shall not be offered for sale or sold in commerce unless
[61 FR 50558, Sept. 26, 1996, as amended at 63 FR 18275, Apr. 14, 1998; 63 FR 34965, June 26, 1998; 63 FR 51526, Sept. 28, 1998. Redesignated and amended at 65 FR 39802, June 28, 2000]