GB/T 1803-2003
ActiveLimits and fits--Tolerance zones for holes and shafts size up to 18mm
极限与配合 尺寸至18 mm孔、轴公差带
Application Summary AI generated
This standard specifies the tolerance zones for holes and shafts with nominal sizes up to 18 mm, defining the limits and fits for precise mechanical assembly. It is applied in engineering design and manufacturing for small-scale components, such as precision instruments, watchmaking, and micro-mechanical systems, where tight dimensional control is critical. The standard ensures interchangeability and consistent fit quality in production and quality inspection contexts.
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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.