GB/T1804—92 “Unfilled Tolerance for Linear Tolerances of General Tolerances†is one of the important mechanical basic standards approved by the State Bureau of Technical Supervision on February 9, 1992, replacing GB1804—79 “Tolerances and Fits with Uncommented Tolerance Dimensionsâ€. Limit deviation is a recommended national standard. The standard implementation date is October 1, 1992. In order to promote the implementation of the new national standard, we introduce the reader to the reader in the form of a question and answer.
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