根据国际标准，以下为基本尺寸0-500mm，4-18级精度标准公差表公差值基本尺寸/mmIT4IT5IT6IT7IT8IT9IT10IT11大于到µm-334610142540603645812183048756104691522365890101858111827437011018306913213352841303050711162539621001605080813193046741201908012010152235548714022012018012182540631001602501802501420294672115185290250315162332528113021032031540018253657891402303604005002027406397155250400注：基本尺寸小于1mm时，无IT14至IT18IT120.10.120.150.180.210.250.30.350.40.460.520.570.63IT130.140.180.220.270.330.390.460.540.630.720.810.890.97IT140.250.30.360.430.520.620.740.8711.151.31.41.55IT15mm0.40.480.580.70.8411.21.41.61.852.12.32.5IT160.60.750.91.11.31.61.92.22.52.93.23.64IT1711.21.51.82.12.533.544.65.25.76.3IT181.41.82.22.73.33.94.65.46.37.28.18.99.7
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