Technical Info
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Finished Hex Nut Dimensions
| Nominal Size or Basic Major Thread Diameter | Width Across Flats | Width Across Corners | Thickness | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Basic | Max | Min | Max | Min | Basic | Max | Min | ||
| 1/4 | 0.25 | 7/16 | 0.438 | 0.428 | 0.505 | 0.488 | 7/32 | 0.226 | 0.212 |
| 5/16 | 0.3125 | 1/2 | 0.5 | 0.489 | 0.577 | 0.557 | 17/64 | 0.273 | 0.258 |
| 3/8 | 0.375 | 9/16 | 0.562 | 0.551 | 0.65 | 0.628 | 21/64 | 0.337 | 0.32 |
| 7/16 | 0.4375 | 11/16 | 0.688 | 0.675 | 0.794 | 0.768 | 3/8 | 0.385 | 0.365 |
| 1/2 | 0.5 | 3/4 | 0.75 | 0.736 | 0.866 | 0.84 | 7/16 | 0.448 | 0.427 |
| 9/16 | 0.5625 | 7/8 | 0.875 | 0.861 | 1.01 | 0.982 | 31/64 | 0.496 | 0.473 |
| 5/8 | 0.625 | 15/16 | 0.938 | 0.922 | 1.083 | 1.051 | 35/64 | 0.559 | 0.535 |
| 3/4 | 0.75 | 1-1/8 | 1.125 | 1.088 | 1.299 | 1.24 | 41/64 | 0.665 | 0.617 |
| 7/8 | 0.875 | 1-5/16 | 1.312 | 1.269 | 1.516 | 1.447 | 3/4 | 0.776 | 0.724 |
| 1 | 1 | 1-1/2 | 1.5 | 1.45 | 1.732 | 1.653 | 55/64 | 0.887 | 0.831 |
| 1-1/8 | 1.125 | 1-11/16 | 1.688 | 1.631 | 1.949 | 1.859 | 31/32 | 0.999 | 0.939 |
| 1-3/8 | 1.375 | 2-1/16 | 2.062 | 1.994 | 2.382 | 2.273 | 1-11/64 | 1.206 | 1.138 |
| 1-1/2 | 1.5 | 2-1/4 | 2.25 | 2.175 | 2.598 | 2.48 | 1-9/32 | 1.317 | 1.245 |
| 1-5/8 | 1.625 | 2-7/16 | 2.438 | 2.356 | 2.815 | 2.686 | 1-25/64 | 1.429 | 1.353 |
| 1-3/4 | 1.75 | 2-5/8 | 2.625 | 2.538 | 3.031 | 2.893 | 1-1/2 | 1.54 | 1.46 |
| 2 | 2 | 3 | 3 | 2.9 | 3.464 | 3.306 | 1-23/32 | 1.763 | 1.675 |
| 2-1/4 | 2.25 | 3-3/8 | 3.375 | 3.263 | 3.897 | 3.719 | 1-15/16 | 1.986 | 1.89 |
| 2-1/2 | 2.5 | 3-3/4 | 3.75 | 3.625 | 4.33 | 4.133 | 2-5/32 | 2.209 | 2.105 |
| 2-3/4 | 2.75 | 4-1/8 | 4.125 | 3.988 | 4.763 | 4.546 | 2-3/8 | 2.431 | 2.319 |
