Hex Thick Nuts
ASME B18.2.2 Dimensions of Hex Thick Nuts
All dimensions are in mm unless mentioned otherwise
| Nominal Size inch | Basic Major Diameter of Thread | Widtf Across Flats, F | Width Across Corners, G | Thickness, H | Maximum Runout of Bearing Surface to Thread Axis, FLM |
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| Specified Proof load | |||||||||||
| Basic inch | Min. | Max. | Min. | Max. | Basic inch | Min. | Max. | Up to 150,000 psi | 150,000 psi and Greater |
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| 1/4 | 0.2500 | 7/16 | 0.428 | 0.438 | 0.488 | 0.505 | 9/32 | 0.274 | 0.288 | 0.015 | 0.010 |
| 5/16 | 0.3125 | 1/2 | 0.489 | 0.500 | 0.557 | 0.577 | 21/64 | 0.320 | 0.336 | 0.016 | 0.011 |
| 3/8 | 0.3750 | 9/16 | 0.551 | 0.562 | 0.628 | 0.650 | 13/32 | 0.398 | 0.415 | 0.017 | 0.012 |
| 7/16 | 0.4375 | 11/16 | 0.675 | 0.688 | 0.768 | 0.794 | 29/64 | 0.444 | 0.463 | 0.018 | 0.013 |
| 1/2 | 0.5000 | 3/4 | 0.736 | 0.750 | 0.840 | 0.866 | 9/16 | 0.552 | 0.573 | 0.019 | 0.014 |
| 9/16 | 0.5625 | 7/8 | 0.861 | 0.875 | 0.892 | 1.010 | 29/64 | 0.598 | 0.621 | 0.020 | 0.015 |
| 5/8 | 0.6250 | 15/16 | 0.922 | 0.938 | 1.051 | 1.083 | 23/32 | 0.706 | 0.731 | 0.021 | 0.016 |
| 3/4 | 0.7500 | 1 1/8 | 1.088 | 1.125 | 1.240 | 1.299 | 13/16 | 0.798 | 0.827 | 0.023 | 0.018 |
| 7/8 | 0.8750 | 1 5/16 | 1.269 | 1.312 | 1.447 | 1.516 | 29/32 | 0.890 | 0.922 | 0.025 | 0.020 |
| 1 | 1.0000 | 1 1/2 | 1.450 | 1.500 | 1.653 | 1.732 | 1 | 0.982 | 1.018 | 0.027 | 0.022 |
| 1 1/8 | 1.1250 | 1 11/16 | 1.631 | 1.688 | 1.859 | 1.949 | 1 5/32 | 1.136 | 1.176 | 0.030 | 0.025 |
| 1 1/4 | 1.2500 | 1 7/8 | 1.812 | 1.875 | 2.066 | 2.165 | 1 1/4 | 1.228 | 1.272 | 0.033 | 0.028 |
| 1 3/8 | 1.3750 | 1 1/16 | 1.994 | 2.062 | 2.273 | 2.382 | 1 3/8 | 1.351 | 1.399 | 0.036 | 0.031 |