CFR›Title 7›Subtitle B›Chapter I›Part 51›Subpart X›Subject Group Size Requirements ContainsSections 51.2284–51.2285CorpusDaily eCFRDisplayed edition2026-05-20Last updated2026-05-20 Sections 51.2284 § 51.2284 Size classification. 51.2285 § 51.2285 Tolerances for size. Previous Grades Grades Next Tolerances for Grade Defects Tolerances for Grade Defects