CFR›Title 7›Subtitle B›Chapter I›Part 51›Subpart U›Subject Group Grade ContainsSection 51.1995CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Sections 51.1995 § 51.1995 U.S. No. 1. Previous Definitions Definitions Next Metric Conversion Table Metric Conversion Table