Dimensions of Heavy Hex Jam Nuts

Nominal Size	Basic Major Diameter of Thread	Width Across Flats, F			Width Across Corners, G		Thickness Heavy Hex Jam Nuts, H1			Maximum Runout of Bearing Surface to Thread Axis, FLM
		Basic	Min.	Max.	Min.	Max.	Basic	Min.	Max.	Heavy Hex Nuts Specified Proof Load		Heavy Hex Jam Nuts
										Up to 150,000 psi	150,000 psi and Greater	All Strength Levels
1/4	0.2500	1/2	0.488	0.500	0.556	0.577	11/64	0.156	0.188	0.017	0.011	0.017
5/16	0.3125	9/16	0.546	0.562	0.622	0.650	13/64	0.186	0.220	0.020	0.012	0.020
3/8	0.3750	11/16	0.669	0.688	0.763	0.794	15/64	0.216	0.252	0.021	0.014	0.021
7/16	0.4375	3/4	0.728	0.750	0.830	0.866	17/64	0.247	0.285	0.022	0.015	0.022
1/2	0.5000	7/8	0.850	0.875	0.969	1.010	19/64	0.277	0.317	0.023	0.016	0.023
9/16	0.5625	15/16	0.909	0.938	1.037	1.083	21/64	0.307	0.349	0.024	0.017	0.024
5/8	0.6250	1 1/16	1.031	1.062	1.175	1.227	23/64	0.337	0.381	0.025	0.018	0.025
3/4	0.7500	1 1/4	1.212	1.250	1.382	1.443	27/64	0.398	0.446	0.027	0.020	0.027
7/8	0.8750	1 7/16	1.394	1.438	1.589	1.660	31/64	0.458	0.510	0.029	0.022	0.029
1	1.0000	1 5/8	1.575	1.625	1.796	1.876	35/64	0.519	0.575	0.031	0.024	0.031
1 1/8	1.1250	1 13/16	1.756	1.812	2.002	2.093	39/64	0.579	0.639	0.033	0.027	0.033
1 1/4	1.2500	2	1.938	2.000	2.209	2.309	23/32	0.687	0.751	0.035	0.030	0.035
1 3/8	1.3750	2 3/16	2.119	2.188	2.416	2.526	25/32	0.747	0.815	0.038	0.033	0.038
1 1/2	1.5000	2 3/8	2.300	2.375	2.622	2.742	27/32	0.808	0.880	0.041	0.036	0.041
1 5/8	1.6250	2 9/16	2.481	2.562	2.828	2.959	29/32	0.868	0.944	0.044	0.038	0.044
1 3/4	1.7500	2 3/4	2.662	2.750	3.035	3.175	31/32	0.929	1.009	0.048	0.041	0.048
1 7/8	1.8750	2 15/16	2.844	2.938	3.242	3.392	1 1/32	0.989	1.073	0.051	0.044	0.051
2	2.0000	3 1/8	3.025	3.125	3.449	3.608	1 3/32	1.050	1.138	0.055	0.047	0.055
2 1/4	2.2500	3 1/2	3.388	3.500	3.862	4.041	1 13/64	1.155	1.251	0.061	0.052	0.061
2 1/2	2.5000	3 7/8	3.750	3.875	4.275	4.474	1 29/64	1.401	1.505	0.068	0.058	0.068
2 3/4	2.7500	4 1/4	4.112	4.250	4.688	4.907	1 37/64	1.522	1.634	0.074	0.064	0.074
3	3.0000	4 5/8	4.475	4.625	5.102	5.340	1 45/64	1.643	1.763	0.081	0.070	0.081
3 1/4	3.2500	5	4.838	5.000	5.515	5.774	1 13/16	1.748	1.876	0.087	0.075	0.087
3 1/2	3.5000	5 3/8	5.200	5.375	5.928	6.207	1 15/16	1.870	2.006	0.094	0.081	0.094
3 3/4	3.7500	5 3/4	5.562	5.750	6.341	6.640	2 1/16	1.990	2.134	0.100	0.087	0.100
4	4.0000	6 1/8	5.925	6.125	6.755	7.073	2 3/16	2.112	2.264	0.107	0.093	0.107