Table 5. American National Standard Preferred Shaft Basis Metric Transition and Interference Fits ANSI/ASME B4.2-1978 (R2009) Basic Size a Locational Transition Locational Transition Locational Interference Medium Drive Force Hole K7 Shaft h6 Fit b Hole N7 Shaft h6 Fit b Hole P7 Shaft h6 Fit b Hole S7 Shaft h6 Fit b Hole U7 Shaft h6 Fit b 1 Max 1.000 1.000 +0.006 0.996 1.000 +0.002 0.994 1.000 0.000 0.986 1.000 –0.008 0.982 1.000 –0.012 Min 0.990 0.994 –0.010 0.986 0.994 –0.014 0.984 0.994 –0.016 0.976 0.994 –0.024 0.972 0.994 –0.028 1.2 Max 1.200 1.200 +0.006 1.196 1.200 +0.002 1.194 1.200 0.000 1.186 1.200 –0.008 1.182 1.200 –0.012 Min 1.190 1.194 –0.010 1.186 1.194 –0.014 1.184 1.194 –0.016 1.176 1.194 –0.024 1.172 1.194 –0.028 1.6 Max 1.600 1.600 +0.006 1.596 1.600 +0.002 1.594 1.600 0.000 1.586 1.600 –0.008 1.582 1.600 –0.012 Min 1.590 1.594 –0.010 1.586 1.594 –0.014 1.584 1.594 –0.016 1.576 1.594 –0.024 1.572 1.594 –0.028 2 Max 2.000 2.000 +0.006 1.996 2.000 +0.002 1.994 2.000 0.000 1.986 2.000 –0.008 1.982 2.000 –0.012 Min 1.990 1.994 –0.010 1.986 1.994 –0.014 1.984 1.994 –0.016 1.976 1.994 –0.024 1.972 1.994 –0.028 2.5 Max 2.500 2.500 +0.006 2.496 2.500 +0.002 2.494 2.500 0.000 2.486 2.500 –0.008 2.482 2.500 –0.012 Min 2.490 2.494 –0.010 2.486 2.494 –0.014 2.484 2.494 –0.016 2.476 2.494 –0.024 2.472 2.494 –0.028 3 Max 3.000 3.000 +0.006 2.996 3.000 +0.002 2.994 3.000 0.000 2.986 3.000 –0.008 2.982 3.000 –0.012 Min 2.990 2.994 –0.010 2.986 2.994 –0.014 2.984 2.994 –0.016 2.976 2.994 –0.024 2.972 2.994 –0.028 4 Max 4.003 4.000 +0.011 3.996 4.000 +0.004 3.992 4.000 0.000 3.985 4.000 –0.007 3.981 4.000 –0.011 Min 3.991 3.992 –0.009 3.984 3.992 –0.016 3.980 3.992 –0.020 3.973 3.992 –0.027 3.969 3.992 –0.031 5 Max 5.003 5.000 +0.011 4.996 5.000 +0.004 4.992 5.000 0.000 4.985 5.000 –0.007 4.981 5.000 –0.011 Min 4.991 4.992 –0.009 4.984 4.992 –0.016 4.980 4.992 –0.020 4.973 4.992 –0.027 4.969 4.992 –0.031 6 Max 6.003 6.000 +0.011 5.996 6.000 +0.004 5.992 6.000 0.000 5.985 6.000 –0.007 5.981 6.000 –0.011 Min 5.991 5.992 –0.009 5.984 5.992 –0.016 5.980 5.992 –0.020 5.973 5.992 –0.027 5.969 5.992 –0.031 8 Max 8.005 8.000 +0.014 7.996 8.000 +0.005 7.991 8.000 0.000 7.983 8.000 –0.008 7.978 8.000 –0.013 Min 7.990 7.991 –0.010 7.981 7.991 –0.019 7.976 7.991 –0.024 7.968 7.991 –0.032 7.963 7.991 –0.037 10 Max 10.005 10.000 +0.014 9.996 10.000 +0.005 9.991 10.000 0.000 9.983 10.000 –0.008 9.978 10.000 –0.013 Min 9.990 9.991 –0.010 9.981 9.991 –0.019 9.976 9.991 –0.024 9.968 9.991 –0.032 9.963 9.991 –0.037 12 Max 12.006 12.000 +0.017 11.995 12.000 +0.006 11.989 12.000 0.000 11.979 12.000 –0.010 11.974 12.000 –0.015 Min 11.988 11.989 –0.012 11.977 11.989 –0.023 11.971 11.989 –0.029 11.961 11.989 –0.039 11.956 11.989 –0.044 16 Max 16.006 16.000 +0.017 15.995 16.000 +0.006 15.989 16.000 0.000 15.979 16.000 –0.010 15.974 16.000 –0.015 Min 15.988 15.989 –0.012 15.977 15.989 –0.023 15.971 15.989 –0.029 15.961 15.989 –0.039 15.956 15.989 –0.044 20 Max 20.006 20.000 +0.019 19.993 20.000 +0.006 19.986 20.000 –0.001 19.973 20.000 –0.014 19.967 20.000 –0.020 Min 19.985 19.987 –0.015 19.972 19.987 –0.028 19.965 19.987 –0.035 19.952 19.987 –0.048 19.946 19.987 –0.054 25 Max 25.006 25.000 +0.019 24.993 25.000 +0.006 24.986 25.000 –0.001 24.973 25.000 –0.014 24.960 25.000 –0.027 Min 24.985 24.987 –0.015 24.972 24.987 –0.028 24.965 24.987 –0.035 24.952 24.987 –0.048 24.939 24.987 –0.061
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