常用尺寸公差摘录

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1、常用尺寸公差摘录公差等级公差种类基本尺寸0～33～66～1010～1414～1818～2424～3030～4040～5050～6565～8080～100100～120120～140MT1A0.070.080.090.100.110.120.140.160.180.200.230.260.290.32B0.140.160.180.200.210.220.240.260.280.300.330.360.390.42MT2A0.100.120.140.160.180.200.220.240.260.300.340.380.420.46B0.200.220.240.260.280.300.320.34

2、0.360.400.440.480.520.56MT3A0.120.140.160.180.200.240.280.320.360.400.460.520.580.64B0.320.340.360.380.400.440.480.520.560.600.660.720.780.84MT4A0.160.180.200.240.280.320.360.420.480.560.640.720.820.92B0.360.380.400.440.480.520.560.620.680.760.840.921.021.12MT5A0.200.240.280.320.380.440.500.560.640.

3、740.861.001.141.28B0.400.440.480.520.580.640.700.760.840.941.061.201.341.48MT6A0.260.320.380.460.540.620.700.800.941.101.281.481.722.00B0.460.520.580.680.740.820.901.001.141.301.481.681.922.20MT7A0.380.480.580.680.780.881.001.141.321.541.802.102.402.70B0.580.680.780.880.981.081.201.341.521.742.002.3

4、02.603.10塑料件尺寸公差表（摘自GB/T14486-93）（续上表）塑料件尺寸公差表（摘自GB/T14486-93）公差等级公差种类基本尺寸140～160160～180180～200200～225225～250250～280280～315315～355355～400400～450450～500MT1A0.360.400.440.480.520.560.600.640.700.780.86B0.460.500.540.580.620.660.700.740.800.880.96MT2A0.500.540.600.660.720.760.840.921.001.101.20B0.600.6

5、40.700.760.820.860.941.021.101.201.30MT3A0.700.780.860.921.001.101.201.301.401.601.74B0.900.981.061.121.201.301.401.501.641.801.94MT4A1.021.121.241.361.481.621.802.002.202.402.60B1.221.321.441.561.681.822.002.202.402.602.80MT5A1.441.601.761.922.102.302.502.803.103.503.90B1.641.801.962.122.302.502.70

6、3.003.303.704.10MT6A2.202.402.602.903.203.503.804.304.705.306.00B2.402.602.803.103.403.704.004.504.905.506.20MT7A3.003.303.704.104.504.905.406.006.707.408.20B3.203.503.904.304.705.105.606.206.907.608.40注：1）、A为不受模具活动部分影响的尺寸公差值；B为受模具活动部分影响的尺寸公差值；2）、《公差等级》按下页《常用材料模塑件公差等级选用表》确定。9常用尺寸公差摘录常用材料模塑件公差等级选用表（摘

7、自GB/T14486-93）塑料代号模塑材料公差等级备注未注公差尺寸未注公高精度一般精度差尺寸ABS丙烯晴－丁二烯－苯乙烯共聚物MT2MT3MT5AS丙烯晴－苯乙烯共聚物MT2MT3MT5制透明罩、外壳CA醋酸纤维素塑料MT3MT4MT6EP环氧树脂MT2MT3MT5PAPA6、PA66(尼龙类塑料)PA46聚酰氨均聚物无填料填充MT3MT4MT6玻璃纤维填充MT2MT3MT5PC聚碳酸脂(PC5