Table 4. American National Standard Preferred Shaft Basis Metric Clearance Fits ANSI/ASME B4.2-1978 (R2009) Basic Size a Loose Running Free Running Close Running Sliding Locational Clearance Hole C11 Shaft h11 Fit b Hole D9 Shaft h9 Fit b Hole F8 Shaft h7 Fit b Hole G7 Shaft h6 Fit b Hole H7 Shaft h6 Fit b 30 Max 30.240 30.000 0.370 30.117 30.000 0.169 30.053 30.000 0.074 30.028 30.000 0.041 30.021 30.000 0.034 Min 30.110 29.870 0.110 30.065 29.948 0.065 30.020 29.979 0.020 30.007 29.987 0.007 30.000 29.987 0.000 40 Max 40.280 40.000 0.440 40.142 40.000 0.204 40.064 40.000 0.089 40.034 40.000 0.050 40.025 40.000 0.041 Min 40.120 39.840 0.120 40.080 39.938 0.080 40.025 39.975 0.025 40.009 39.984 0.009 40.000 39.984 0.000 50 Max 50.290 50.000 0.450 50.142 50.000 0.204 50.064 50.000 0.089 50.034 50.000 0.050 50.025 50.000 0.041 Min 50.130 49.840 0.130 50.080 49.938 0.080 50.025 49.975 0.025 50.009 49.984 0.009 50.000 49.984 0.000 60 Max 60.330 60.000 0.520 60.174 60.000 0.248 60.076 60.000 0.106 60.040 60.000 0.059 60.030 60.000 0.049 Min 60.140 59.810 0.140 60.100 59.926 0.100 60.030 59.970 0.030 60.010 59.981 0.010 60.000 59.981 0.000 80 Max 80.340 80.000 0.530 80.174 80.000 0.248 80.076 80.000 0.106 80.040 80.000 0.059 80.030 80.000 0.049 Min 80.150 79.810 0.150 80.100 79.926 0.100 80.030 79.970 0.030 80.010 79.981 0.010 80.000 79.981 0.000 100 Max 100.390 100.000 0.610 100.207 100.000 0.294 100.090 100.000 0.125 100.047 100.000 0.069 100.035 100.000 0.057 Min 100.170 99.780 0.170 100.120 99.913 0.120 100.036 99.965 0.036 100.012 99.978 0.012 100.000 99.978 0.000 120 Max 120.400 120.000 0.620 120.207 120.000 0.294 120.090 120.000 0.125 120.047 120.000 0.069 120.035 120.000 0.057 Min 120.180 119.780 0.180 120.120 119.913 0.120 120.036 119.965 0.036 120.012 119.978 0.012 120.000 119.978 0.000 160 Max 160.460 160.000 0.710 160.245 160.000 0.345 160.106 160.000 0.146 160.054 160.000 0.079 160.040 160.000 0.065 Min 160.210 159.750 0.210 160.145 159.900 0.145 160.043 159.960 0.043 160.014 159.975 0.014 160.000 159.975 0.000 200 Max 200.530 200.000 0.820 200.285 200.000 0.400 200.122 200.000 0.168 200.061 200.000 0.090 200.046 200.000 0.075 Min 200.240 199.710 0.240 200.170 199.885 0.170 200.050 199.954 0.050 200.015 199.971 0.015 200.000 199.971 0.000 250 Max 250.570 250.000 0.860 250.285 250.000 0.400 250.122 250.000 0.168 250.061 250.000 0.090 250.046 250.000 0.075 Min 250.280 249.710 0.280 250.170 249.885 0.170 250.050 249.954 0.050 250.015 249.971 0.015 250.000 249.971 0.000 300 Max 300.650 300.000 0.970 300.320 300.000 0.450 300.137 300.000 0.189 300.069 300.000 0.101 300.052 300.000 0.084 Min 300.330 299.680 0.330 300.190 299.870 0.190 300.056 299.948 0.056 300.017 299.968 0.017 300.000 299.968 0.000 400 Max 400.760 400.000 1.120 400.350 400.000 0.490 400.151 400.000 0.208 400.075 400.000 0.111 400.057 400.000 0.093 Min 400.400 399.640 0.400 400.210 399.860 0.210 400.062 399.943 0.062 400.018 399.964 0.018 400.000 399.964 0.000 500 Max 500.880 500.000 1.280 500.385 500.000 0.540 500.165 500.000 0.228 500.083 500.000 0.123 500.063 500.000 0.103 Min 500.480 499.600 0.480 500.230 499.845 0.230 500.068 499.937 0.068 500.020 499.960 0.020 500.000 499.960 0.000 a The sizes shown are first-choice basic sizes (see Table 1, page 688 ). Preferred fits for other sizes can be calculated from data given in ANSI/ASME B4.2-1978 (R2009). b All fits shown in this table have clearance. All dimensions are in millimeters. Table 4. (Continued) American National Standard Preferred Shaft Basis Metric Clearance Fits ANSI/ASME B4.2-1978 (R2009)
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