Heavy Hex Jam Nut Dimensions
| Nominal Size | F | C | H | Part Numbers | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Width Across Flats | Width Across Corners | Thickness | ||||||||
| Basic | Max | Min | Max | Min | Basic | Max | Min | Plain | Galvanized | |
| 3⁄8 | 11⁄16 | 0.688 | 0.669 | 0.794 | 0.763 | 15⁄64 | 0.252 | 0.216 | - | - |
| 1⁄2 | 7⁄8 | 0.875 | 0.850 | 1.010 | 0.969 | 19⁄64 | 0.317 | 0.277 | - | - |
| 5⁄8 | 11⁄16 | 1.062 | 1.031 | 1.227 | 1.175 | 23⁄64 | 0.381 | 0.337 | - | - |
| 3⁄4 | 11⁄4 | 1.250 | 1.212 | 1.443 | 1.382 | 27⁄64 | 0.446 | 0.398 | - | 18404 |
| 7⁄8 | 17⁄16 | 1.438 | 1.394 | 1.660 | 1.589 | 31⁄64 | 0.510 | 0.458 | - | - |
| 1 | 15⁄8 | 1.625 | 1.575 | 1.876 | 1.796 | 35⁄64 | 0.575 | 0.519 | 17112 | 17113 |
| 11⁄8 | 113⁄16 | 1.812 | 1.756 | 2.093 | 2.002 | 39⁄64 | 0.639 | 0.579 | - | - |
| 11⁄4 | 2 | 2.000 | 1.938 | 2.309 | 2.209 | 23⁄32 | 0.751 | 0.687 | 17114 | 17115 |
| 13⁄8 | 213⁄16 | 2.188 | 2.119 | 2.526 | 2.416 | 25⁄32 | 0.815 | 0.747 | - | - |
| 11⁄2 | 23⁄8 | 2.375 | 2.300 | 2.742 | 2.622 | 27⁄32 | 0.880 | 0.808 | 17116 | 17117 |
| 15⁄8 | 29⁄16 | 2.562 | 2.481 | 2.959 | 2.828 | 29⁄32 | 0.944 | 0.868 | - | - |
| 13⁄4 | 23⁄4 | 2.750 | 2.662 | 3.175 | 3.035 | 31⁄32 | 1.009 | 0.929 | 17118 | 17119 |
| 17⁄8 | 215⁄16 | 2.938 | 2.844 | 3.392 | 3.242 | 11⁄32 | 1.073 | 0.989 | - | - |
| 2 | 31⁄8 | 3.125 | 3.025 | 3.608 | 3.449 | 13⁄32 | 1.138 | 1.050 | 17120 | 17121 |
| 21⁄4 | 31⁄2 | 3.500 | 3.388 | 4.041 | 3.862 | 113⁄64 | 1.251 | 1.155 | 19847 | 19846 |
| 21⁄2 | 37⁄8 | 3.875 | 3.750 | 4.474 | 4.275 | 129⁄64 | 1.505 | 1.401 | - | - |
| 23⁄4 | 41⁄4 | 4.250 | 4.112 | 4.907 | 4.688 | 137⁄64 | 1.634 | 1.522 | - | - |
| 3 | 45⁄8 | 4.625 | 4.475 | 5.340 | 5.102 | 145⁄64 | 1.763 | 1.643 | - | - |
| 31⁄4 | 5 | 5.000 | 4.838 | 5.774 | 5.515 | 113⁄16 | 1.876 | 1.748 | - | - |
| 31⁄2 | 53⁄8 | 5.375 | 5.200 | 6.207 | 5.928 | 115⁄16 | 2.006 | 1.870 | - | - |
| 33⁄4 | 53⁄4 | 5.750 | 5.562 | 6.640 | 6.341 | 21⁄16 | 2.134 | 1.990 | - | - |
| 4 | 61⁄8 | 6.125 | 5.925 | 7.073 | 6.755 | 23⁄16 | 2.264 | 2.112 | - | - |
|
Dimensions per ASME B18.2.2 1987 (R 1999) |
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