ASME B18.2.2 Hex Flat Nuts
ASME B18.2.2 Hex Flat Nuts Dimensions (mm)
| Nominal Size | Basic Major Diameter of Thread | Width Across Flats, F | Width Across Corners, G | Thickness, H | Runout, FIM | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Basic | Min. | Max. | Min. | Max. | Basic | Min. | Max. | |||
| 1 1/8 | 28.575 | 42.863 | 41.427 | 42.875 | 47.219 | 49.505 | 25.400 | 24.638 | 26.162 | 0.737 |
| 1 1/4 | 31.750 | 47.625 | 46.025 | 47.625 | 52.476 | 54.991 | 27.781 | 26.975 | 28.600 | 0.813 |
| 1 3/8 | 34.925 | 52.388 | 50.648 | 52.375 | 57.734 | 60.503 | 30.559 | 29.693 | 31.420 | 0.889 |
| 1 1/2 | 38.100 | 57.150 | 55.245 | 57.150 | 62.992 | 65.989 | 33.338 | 32.410 | 34.239 | 0.991 |
ASME B18.2.2 Hex Flat Nuts Dimensions (Inch)
| Nominal Size | Basic Major Diameter of Thread | Width Across Flats, F | Width Across Corners, G | Thickness, H | Runout, FIM | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Basic | Min. | Max. | Min. | Max. | Basic | Min. | Max. | |||
| 1 1/8 | 1.1250 | 1 11/16 | 1.631 | 1.688 | 1.859 | 1.949 | 1 | 0.970 | 1.030 | 0.029 |
| 1 1/4 | 1.2500 | 1 7/8 | 1.812 | 1.875 | 2.066 | 2.165 | 1 3/32 | 1.062 | 1.126 | 0.032 |
| 1 3/8 | 1.3750 | 2 1/16 | 1.994 | 2.062 | 2.273 | 2.382 | 1 13/64 | 1.169 | 1.237 | 0.035 |
| 1 1/2 | 1.5000 | 2 1/4 | 2.175 | 2.250 | 2.480 | 2.598 | 1 5/16 | 1.276 | 1.348 | 0.039 |