At least 90 percent of the area of the sheet shall be within the tolerances given in the following table. At no point shall the thickness vary from the nominal by a value greater than 125 percent of this specified tolerance.
Tolerances in Thickness, Inches
All tolerances ± unless noted otherwise.
|
Nominal Thickness, Inches
|
Grades
X, XP. XPC, XX, XXP, XXX, XXXP, XXXPC, FR1, FR2, FR3
|
Grades
ES-1, ES-2, ES-3, CE
|
Grade C
|
Grade L
|
Grade LE
|
Grade AA
|
Grades
G3, G5, G7, G9, G10, G11, FR4, FR5, CEM-1, CEM-3
|
Grade N-1
|
|
0.010
|
0.002
|
...
|
...
|
0.003
|
...
|
...
|
0.002
|
0.003
|
|
0.015
|
0.0025
|
...
|
...
|
0.0035
|
0.0035
|
...
|
0.003
|
0.0035
|
|
0.020
|
0.003
|
...
|
...
|
0.004
|
0.004
|
...
|
0.004
|
0.004
|
|
0.025
|
0.0035
|
0.005
|
...
|
0.0045
|
0.0045
|
...
|
0.005
|
0.0045
|
|
0.031
|
0.0035
|
0.0065
|
0.0065
|
0.005
|
0.005
|
...
|
0.0065
|
0.0065
|
|
0.047
|
0.0045
|
0.0075
|
0.0075
|
0.0055
|
0.0055
|
...
|
0.0075
|
0.0075
|
|
0.062
|
0.005
|
0.0075
|
0.0075
|
0.006
|
0.006
|
0.018
|
0.0075
|
0.0075
|
|
0.094
|
0.007
|
0.009
|
0.009
|
0.007
|
0.007
|
0.018
|
0.009
|
0.009
|
|
0.125
|
0.008
|
0.010
|
0.010
|
0.008
|
0.008
|
0.020
|
0.012
|
0.010
|
|
0.156
|
0.009
|
0.011
|
0.011
|
0.009
|
0.009
|
...
|
0.015
|
0.011
|
|
0.188
|
0.010
|
0.0125
|
0.0125
|
0.010
|
0.010
|
0.024
|
0.019
|
0.0125
|
|
0.219
|
0.011
|
0.014
|
0.014
|
0.011
|
0.011
|
...
|
0.021
|
0.014
|
|
0.250
|
0.012
|
0.015
|
+0.030
|
+0.024
|
0.012
|
0.028
|
0.022
|
0.015
|
|
0.312
|
0.014
|
0.017
|
+0.035
|
+0.029
|
0.045
|
0.034
|
0.026
|
0.024
|
|
0.375
|
0.017
|
0.020
|
+0.040
|
+0.034
|
0.017
|
0.038
|
0.030
|
0.032
|
|
0.438
|
0.019
|
0.022
|
+0.044
|
+0.038
|
0.019
|
0.044
|
0.033
|
0.040
|
|
0.500
|
0.021
|
0.024
|
+0.048
|
+0.042
|
0.021
|
0.048
|
0.036
|
0.048
|
|
0.625
|
0.024
|
0.027
|
+0.053
|
+0.048
|
0.024
|
0.058
|
0.040
|
0.054
|
|
0.750
|
0.027
|
0.029
|
+0.058
|
+0.054
|
0.027
|
0.068
|
0.043
|
0.058
|
|
0.375
|
0.030
|
0.031
|
+0.062
|
+0.060
|
0.030
|
0.076
|
0.046
|
0.062
|
|
1.000
|
0.033
|
0.033
|
+0.065
|
+0.065
|
0.033
|
0.086
|
0.049
|
0.066
|
|
1.125
|
0.035
|
0.035
|
+0.069
|
+0.069
|
0.035
|
...
|
0.053
|
...
|
|
1.250
|
0.037
|
0.037
|
+0.073
|
+0.073
|
0.037
|
0.106
|
0.055
|
...
|
|
1.375
|
0.039
|
0.039
|
+0.077
|
+0.077
|
0.039
|
...
|
0.058
|
...
|
|
1.500
|
0.041
|
0.041
|
+0.081
|
+0.081
|
0.041
|
0.124
|
0.061
|
...
|
|
1.625
|
0.043
|
0.043
|
+0.085
|
+0.085
|
0.043
|
...
|
0.064
|
...
|
|
1.750
|
0.045
|
0.045
|
+0.089
|
+0.089
|
0.045
|
0.144
|
0.062
|
...
|
|
1.875
|
0.047
|
0.047
|
+0.093
|
+0.093
|
0.047
|
...
|
0.070
|
...
|
|
2.000
|
0.049
|
0.049
|
+0.097
|
+0.097
|
0.049
|
0.160
|
0.073
|
...
|
|
2.125
|
0.052
|
...
|
+0.105
|
+0.105
|
...
|
...
|
0.079
|
...
|
|
2.500
|
0.056
|
...
|
+0.113
|
+0.113
|
...
|
...
|
0.085
|
...
|
|
2.750
|
0.061
|
...
|
+0.121
|
+0.121
|
...
|
...
|
0.091
|
...
|
|
3.000
|
0.065
|
...
|
+0.130
|
+0.130
|
...
|
...
|
0.097
|
...
|
|
3.500
|
0.073
|
...
|
+0.146
|
+0.146
|
...
|
...
|
0.110
|
...
|
|
4.000
|
0.082
|
...
|
+0.163
|
+0.163
|
...
|
...
|
0.122
|
...
|
|
4.500
|
0.090
|
...
|
+0.179
|
+0.179
|
...
|
...
|
0.134
|
...
|
|
5.000
|
0.095
|
...
|
+0.190
|
+0.190
|
...
|
...
|
0.142
|
...
|
|
Sheet Tolerances
