Nominal Size or
Basic Major Dia. of Thread |
F |
G |
H |
Width Across
Flats |
Width Across
Corners |
Thickness
Heavy Hex Nuts |
| Basic |
Max. |
Min. |
Max. |
Min. |
Basic |
Max. |
Min. |
1/4 0.2500
5/16 0.3125
3/8 0.3750
7/16 0.4375 |
1/2
9/16
11/16
3/4 |
0.500
0.562
0.688
0.750 |
0.488
0.546
0.669
0.728 |
0.577
0.650
0.794
0.866 |
0.556
0.622
0.763
0.830 |
15/64
19/64
23/64
27/64 |
0.250
0.314
0.377
0.441 |
0.218
0.280
0.341
0.403 |
1/2 0.5000
9/16 0.5625
5/8 0.6250
3/4 0.7500 |
7/8
15/16
1-1/16
1-1/4 |
0.875
0.938
1.062
1.250 |
0.850
0.909
1.031
1.212 |
1.010
1.083
1.227
1.443 |
0.969
1.037
1.175
1.382 |
31/64
35/64
39/64
47/64 |
0.504
0.568
0.631
0.758 |
0.464
0.526
0.587
0.710 |
7/8 0.8750
1 1.0000
1-1/8 1.1250
1-1/4 1.2500 |
1-7/16
1-5/8
1-13/16
2 |
1.438
1.625
1.812
2.000 |
1.394
1.575
1.756
1.938 |
1.660
1.876
2.093
2.309 |
1.589
1.796
2.002
2.209 |
55/64
63/64
1-7/64
1-7/32 |
0.885
1.012
1.139
1.251 |
0.833
0.956
1.079
1.187 |
1-3/8 1.3750
1-1/2 1.5000
1-5/8 1.6250
1-3/4 1.7500 |
2-3/16
2-3/8
2-9/16
2-3/4 |
2.188
2.375
2.562
2.750 |
2.119
2.300
2.481
2.662 |
2.526
2.742
2.959
3.175 |
2.416
2.622
2.828
3.035 |
1-11/32
1-15/32
1-19/32
1-23/32 |
1.378
1.505
1.632
1.759 |
1.310
1.433
1.556
1.679 |
1-7/8 1.8750
2 2.0000
2-1/4 2.2500
2-1/2 2.5000 |
2-15/16
3-1/8
3-1/2
3-7/8 |
2.938
3.125
3.500
3.875 |
2.844
3.025
3.388
3.750 |
3.392
3.608
4.041
4.474 |
3.242
3.449
3.862
4.275 |
1-27/32
1-31/32
2-13/64
2-29/64 |
1.886
2.013
2.251
2.505 |
1.802
1.925
2.155
2.401 |
2-3/4 2.7500
3 3.0000
3-1/4 3.2500
3-1/2 3.5000 |
4-1/4
4-5/8
5
5-3/8 |
4.250
4.625
5.000
5.375 |
4.112
4.475
4.838
5.200 |
4.907
5.340
5.774
6.207 |
4.688
5.102
5.515
5.928 |
2-45/64
2-61/64
3-3/16
3-7/16 |
2.759
3.013
3.252
3.506 |
2.647
2.893
3.124
3.370 |
3-3/4 3.7500
4 4.000
|
5-3/4
6-1/8 |
5.750
6.125 |
5.562
5.925 |
6.640
7.073 |
6.341
6.755 |
3-11/16
3-15/16 |
3.760
4.014 |
3.616
3.862 |
