CFR›Title 7›Subtitle B›Chapter I›Part 51›Subpart P›Subject Group Samples for Grade and Size Determination ContainsSection 51.1548CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Sections 51.1548 § 51.1548 Samples for grade and size determination. Previous Metric Conversion Table Metric Conversion Table Next Size Size