ASME B18.2.2 Hex Jam Nuts
| Nominal Size or Basic Major Dia. of Thread | Width Across Flats F | Width Across Corners G | Thickness, Jam Nuts H1 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Basic | Max. | Min. | Max. | Min. | Basic | Max. | Min. | ||
| ASME B18.2.2 - 1⁄4 | 0.25 | 7⁄16 | 0.438 | 0.428 | 0.505 | 0.488 | 5⁄32 | 0.163 | 0.15 |
| ASME B18.2.2 - 5⁄16 | 0.3125 | 1⁄2 | 0.5 | 0.489 | 0.577 | 0.557 | 3⁄16 | 0.195 | 0.18 |
| ASME B18.2.2 - 3⁄8 | 0.375 | 9⁄16 | 0.562 | 0.551 | 0.65 | 0.628 | 7⁄32 | 0.227 | 0.21 |
| ASME B18.2.2 - 7⁄16 | 0.4375 | 11⁄16 | 0.688 | 0.675 | 0.794 | 0.768 | 1⁄4 | 0.26 | 0.24 |
| ASME B18.2.2 - 1⁄2 | 0.5 | 3⁄4 | 0.75 | 0.736 | 0.866 | 0.84 | 5⁄16 | 0.323 | 0.302 |
| ASME B18.2.2 - 9⁄16 | 0.5625 | 7⁄8 | 0.875 | 0.861 | 1.01 | 0.982 | 5⁄16 | 0.324 | 0.301 |
| ASME B18.2.2 - 5⁄8 | 0.625 | 15⁄16 | 0.938 | 0.922 | 1.083 | 1.051 | 3⁄8 | 0.387 | 0.363 |
| ASME B18.2.2 - 3⁄4 | 0.75 | 11⁄8 | 1.125 | 1.088 | 1.299 | 1.24 | 27⁄64 | 0.446 | 0.398 |
| ASME B18.2.2 - 7⁄8 | 0.875 | 15⁄16 | 1.312 | 1.269 | 1.516 | 1.447 | 31⁄64 | 0.51 | 0.458 |
| ASME B18.2.2 - 1 | 1 | 11⁄2 | 1.5 | 1.45 | 1.732 | 1.653 | 35⁄64 | 0.575 | 0.519 |
| ASME B18.2.2 - 11⁄8 | 1.125 | 111⁄16 | 1.688 | 1.631 | 1.949 | 1.859 | 39⁄64 | 0.639 | 0.579 |
| ASME B18.2.2 - 1 1⁄4 | 1.25 | 17⁄8 | 1.875 | 1.812 | 2.165 | 2.066 | 23⁄32 | 0.751 | 0.687 |
| ASME B18.2.2 - 1 3⁄8 | 1.375 | 21⁄16 | 2.062 | 1.994 | 2.382 | 2.273 | 25⁄32 | 0.815 | 0.747 |
| ASME B18.2.2 - 1 1⁄2 | 1.5 | 21⁄4 | 2.25 | 2.175 | 2.598 | 2.48 | 27⁄32 | 0.88 | 0.808 |