GB/T 16671-2018
ActiveGeometrical product specifications (GPS)—Geometrical tolerancing—Maximum material requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR)
产品几何技术规范（GPS） 几何公差 最大实体要求（MMR）、最小实体要求（LMR）和可逆要求（RPR）
Application Summary AI generated
This standard specifies the principles and application rules for maximum material requirement (MMR), least material requirement (LMR), and reciprocity requirement (RPR) in geometrical tolerancing. It is applied in mechanical engineering and manufacturing industries to define how tolerances interact with actual part size, ensuring functional assembly and interchangeability of components such as shafts, holes, and mating parts. The standard is used during design, production, and quality inspection to optimize material usage and guarantee fit under extreme material conditions.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.