Dimensions for ASME B18.2.2 Heavy Hex Nuts

Nominal Size	Basic Major Thread Diameter	Width Across Flats, F			Width Across Corners, G		Thickness Heavy Hex Nuts, H
		Basic	Min.	Max.	Min.	Max.	Basic	Min.	Max.
1/4	0.2500	1/2	0.488	0.500	0.556	0.577	15/64	0.218	0.250
5/16	0.3125	9/16	0.546	0.562	0.622	0.650	19/64	0.280	0.314
3/8	0.3750	11/16	0.669	0.688	0.763	0.794	23/64	0.341	0.377
7/16	0.4375	3/4	0.728	0.750	0.830	0.866	27/64	0.403	0.441
1/2	0.5000	7/8	0.850	0.875	0.969	1.010	31/64	0.464	0.504
9/16	0.5625	15/16	0.909	0.938	1.037	1.083	35/64	0.526	0.568
5/8	0.6250	1 1/16	1.031	1.062	1.175	1.227	39/64	0.587	0.631
3/4	0.7500	1 1/4	1.212	1.250	1.382	1.443	47/64	0.710	0.758
7/8	0.8750	1 7/16	1.394	1.438	1.589	1.660	55/64	0.833	0.885
1	1.0000	1 5/8	1.575	1.625	1.796	1.876	63/64	0.956	1.012
1 1/8	1.1250	1 13/16	1.756	1.812	2.002	2.093	1 7/64	1.079	1.139
1 1/4	1.2500	2	1.938	2.000	2.209	2.309	1 7/32	1.187	1.251
1 3/8	1.3750	2 3/16	2.119	2.188	2.416	2.526	1 11/32	1.310	1.378
1 1/2	1.5000	2 3/8	2.300	2.375	2.622	2.742	1 15/32	1.433	1.505
1 5/8	1.6250	2 9/16	2.481	2.562	2.828	2.959	1 19/32	1.556	1.632
1 3/4	1.7500	2 3/4	2.662	2.750	3.035	3.175	1 23/32	1.679	1.759
1 7/8	1.8750	2 15/16	2.844	2.938	3.242	3.392	1 27/32	1.802	1.886
2	2.0000	3 1/8	3.025	3.125	3.449	3.608	1 31/32	1.925	2.013
2 1/4	2.2500	3 1/2	3.388	3.500	3.862	4.041	2 13/64	2.155	2.251
2 1/2	2.5000	3 7/8	3.750	3.875	4.275	4.474	2 29/64	2.401	2.505
2 3/4	2.7500	4 1/4	4.112	4.250	4.688	4.907	2 45/64	2.647	2.759
3	3.0000	4 5/8	4.475	4.625	5.102	5.340	2 61/64	2.893	3.013
3 1/4	3.2500	5	4.838	5.000	5.515	5.774	3 3/16	3.124	3.252
3 1/2	3.5000	5 3/8	5.200	5.375	5.928	6.207	3 7/16	3.370	3.506
3 3/4	3.7500	5 3/4	5.562	5.750	6.341	6.640	3 11/16	3.616	3.760
4	4.0000	6 1/8	5.925	6.125	6.755	7.073	3 15/16	3.862	4.014