Dimensions of ASME B18.2.2 Slotted Hex Nuts

Nominal Size	Basic Major Thread Diameter	Width Across Flats, F			Width Across Corners, G		Thickness, H			Unslotted Thickness, T		Width of Slot, S
		Basic	Min.	Max.	Min.	Max.	Basic	Min.	Max.	Min.	Max.	Min.	Max.
1/4	0.2500	7/16	0.428	0.438	0.488	0.505	7/32	0.212	0.226	0.120	0.140	0.07	0.10
5/16	0.3125	1/2	0.489	0.500	0.557	0.577	17/64	0.258	0.273	0.160	0.180	0.09	0.12
3/8	0.3750	9/16	0.551	0.562	0.628	0.650	21/64	0.320	0.337	0.190	0.210	0.12	0.15
7/16	0.4375	11/16	0.675	0.688	0.768	0.794	3/8	0.365	0.385	0.210	0.230	0.12	0.15
1/2	0.5000	3/4	0.736	0.750	0.840	0.866	7/16	0.427	0.448	0.270	0.290	0.15	0.18
9/16	0.5625	7/8	0.861	0.875	0.982	1.010	31/64	0.473	0.496	0.290	0.310	0.15	0.18
5/8	0.6250	15/16	0.922	0.938	1.051	1.083	35/64	0.535	0.559	0.320	0.340	0.18	0.24
3/4	0.7500	1 1/8	1.088	1.125	1.240	1.299	41/64	0.617	0.665	0.380	0.400	0.18	0.24
7/8	0.8750	1 5/16	1.269	1.312	1.447	1.516	3/4	0.724	0.776	0.490	0.520	0.18	0.24
1	1.0000	1 1/2	1.450	1.500	1.653	1.732	55/64	0.831	0.887	0.560	0.590	0.24	0.30
1 1/8	1.1250	1 11/16	1.631	1.688	1.859	1.949	31/32	0.939	0.999	0.610	0.640	0.24	0.33
1 1/4	1.2500	1 7/8	1.812	1.875	2.066	2.165	1 1/16	1.030	1.094	0.670	0.700	0.31	0.40
1 3/8	1.3750	2 1/1	1.994	2.062	2.273	2.382	1 11/64	1.138	1.206	0.780	0.820	0.31	0.40
1 1/2	1.5000	2 1/4	2.175	2.250	2.480	2.598	1 9/32	1.245	1.317	0.820	0.860	0.37	0.46