ASME B18.2.2 Heavy Square Nuts
| Nominal Size or Basic Major Dia. of Thread | Width Across Flats F | Width Across Corners G | Thickness H | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Basic | Max. | Min. | Max. | Min. | Basic | Max. | Min. | ||
| ASME B18.2.2 - 1⁄4 | 0.25 | 1⁄2 | 0.5 | 0.488 | 0.707 | 0.64 | 1⁄4 | 0.266 | 0.218 |
| ASME B18.2.2 - 5⁄16 | 0.3125 | 9⁄16 | 0.562 | 0.546 | 0.795 | 0.72 | 5⁄16 | 0.33 | 0.28 |
| ASME B18.2.2 - 3⁄8 | 0.375 | 11⁄16 | 0.688 | 0.669 | 0.973 | 0.889 | 3⁄8 | 0.393 | 0.341 |
| ASME B18.2.2 - 7⁄16 | 0.4375 | 3⁄4 | 0.75 | 0.728 | 1.06 | 0.97 | 7⁄16 | 0.456 | 0.403 |
| ASME B18.2.2 - 1⁄2 | 0.5 | 7⁄8 | 0.875 | 0.85 | 1.237 | 1.137 | 1⁄2 | 0.52 | 0.464 |
| ASME B18.2.2 - 5⁄8 | 0.625 | 1 1⁄16 | 1.062 | 1.031 | 1.503 | 1.386 | 5⁄8 | 0.647 | 0.587 |
| ASME B18.2.2 - 3⁄4 | 0.75 | 1 1⁄4 | 1.25 | 1.212 | 1.768 | 1.635 | 3⁄4 | 0.774 | 0.71 |
| ASME B18.2.2 - 7⁄8 | 0.875 | 1 7⁄16 | 1.438 | 1.394 | 2.033 | 1.884 | 7⁄8 | 0.901 | 0.833 |
| ASME B18.2.2 - 1 | 1 | 1 5⁄8 | 1.625 | 1.575 | 2.298 | 2.132 | 1 | 1.028 | 0.956 |
| ASME B18.2.2 - 1 1⁄8 | 1.125 | 1 13⁄16 | 1.812 | 1.756 | 2.563 | 2.381 | 11⁄8 | 1.155 | 1.079 |
| ASME B18.2.2 - 1 1⁄4 | 1.25 | 2 | 2 | 1.938 | 2.828 | 2.631 | 11⁄4 | 1.282 | 1.187 |
| ASME B18.2.2 - 1 3⁄8 | 1.375 | 2 3⁄16 | 2.188 | 2.119 | 3.094 | 2.879 | 13⁄8 | 1.409 | 1.31 |
| ASME B18.2.2 - 1 1⁄2 | 1.5 | 2 3⁄8 | 2.375 | 2.3 | 3.359 | 3.128 | 11⁄2 | 1.536 | 1.433 |
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