General
| Size Code | Nominal Washer Size | T Thickness MIN | A Inside Diameter | B Outside Diameter MAX |
|---|---|---|---|---|
| #2 | 2 - .086 | .020 | .094 / .088 | .172 |
| #3 | 3 - .099 | .025 | .170 / .101 | .195 |
| #4 | 4 - .112 | .025 | .120 / .114 | .209 |
| #5 | 5 - .125 | .031 | .133 / .127 | .236 |
| #6 | 6 - .138 | .031 | .148 / .141 | .250 |
| #8 | 8 - .164 | .040 | .174 / .141 | .293 |
| #10 | 10 - .190 | .047 | .200 / .193 | .334 |
| #12 | 12 - .216 | .056 | .227 / .220 | .377 |
| 1/4 | 1/4 - .250 | .062 | .262 / .254 | .489 |
| 5/16 | 5/16 - .312 | .078 | .326 / .317 | .586 |
| 3/8 | 3/8 - .375 | .094 | .390 / .380 | .683 |
| 7/16 | 7/16 - .438 | .109 | .455 / .443 | .779 |
| 1/2 | 1/2 - .500 | .125 | .518 / .506 | .873 |
| 9/16 | 9/16 - .562 | .141 | .582 / .570 | .971 |
| 5/8 | 5/8 - .625 | .156 | .650 / .635 | 1.079 |
| 11/16 | 11/16 - .688 | .172 | .713 / .98 | 1.176 |
| 3/4 | 3/4 - .750 | .188 | .775 / .760 | 1.271 |