Standard ANSI Hardware
Manufacturing Processes | Applications and Design
Notes:

Size Designation
Type 1 & 2 |
A |
B |
C |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
4 |
.123 |
.115 |
.475
.510
.610 |
.460
.495
.580
|
.021
.021
.021 |
.016
.017
.017 |
6 |
.150 |
.141 |
.510
.610
.690 |
.495
.580
.670
|
|
.023
.023
.023
|
8 |
.176 |
.168 |
.610
.690
.760 |
.580
.670
.740
|
.034
.034
.034
|
.028
.028
.028 |
10 |
.204 |
.195 |
.610
.690
.760
.900 |
.580
.670
.740
.880
|
.034
.040
.040
.040
|
.028
.032
.032
.032
|
12 |
.231 |
.221 |
.690
.760
.900
.985
|
.670
.725
.880
.965
|
.040
.040
.040
.045
|
.032
.032
.032
.037
|
1 / 4 |
.267 |
.256 |
.760
.900
.985
1.070
|
.725
.880
.965
1.045
|
.040
.045
.045
.045
|
.032
.037
.037
.037
|
5 / 16 |
.332 |
.320 |
.900
.985
1.070
1.155 |
.865
.965
1.045
1.130
|
|
.032
.037
.042
.042
|
3 / 8 |
.398 |
.384 |
.985
1.070
1.070
1.260
|
.965
1.045
1.130
1.220
|
.045
.050
.050
.050
|
.037
.042
.042
.042
|
7 / 16 |
.464 |
.448 |
|
1.045
1.130
1.220
1.290
|
.050
.050
.055
.055
|
.042
.042
.047
.047
|
1 / 2 |
.530 |
.512 |
1.260
1.315
1.410
1.620
|
1.220
1.290
1.380
1.590
|
.055
.055
.060
.067
|
.047
.047
.052
.059
|
9 / 16 |
.596 |
.576 |
1.315
1.430
1.620
1.830
|
1.290
1.380
1.590
1.797
|
.055
.060
.067
.067
|
.047
.052
.059
.059
|
5 / 8 |
.663 |
.640 |
1.410
1.620
1.830
1.975
|
1.380
1.590
1.797
1.935
|
.060
.067
.067
.067
|
.058
.059
.059
.059
|
|