Prevailing-torque steel hex and hex flange nuts, inch series (IFI 100/107)

Dimensions in inches (1 inch=25.4 mm) source IFI 100-107 table 2- prevailing-torque regular and light hex nuts
d Thread size		UNC (nr of threads x inch)	UNF (nr of threads x inch)	F basic		G min		H max Top insert	H max All metal type	J min
inches	mm			Regular series	Light series	Regular series	Light series
4	2.84	40	48	0.25	0.25	0.275	0.275	0.163	0.163	0.066
6	3.51	32	40	0.313	0.313	0.344	0.344	0.188	0.171	0.075
8	4.17	32	36	0.344	0.344	0.378	0.378	0.239	0.191	0.083
10	4.83	24	32	0.375	0.375	0.413	0.413	0.249	0.241	0.083
12	5.49	24	28	0.438	0.438	0.482	0.482	0.328	0.241	0.103
1/4	6.35	20	28	0.438	0.438	0.488	0.488	0.328	0.288	0.145
5/16	7.94	18	24	0.5	0.5	0.557	0.557	0.359	0.336	0.166
3/8	9.53	16	24	0.56	0.56	0.628	0.628	0.469	0.415	0.198
7/16	11.11	14	20	0.69	0.69	0.768	0.768	0.524	0.463	0.223
1/2	12.70	13	20	0.75	0.75	0.84	0.84	0.609	0.573	0.262
9/16	14.29	12	18	0.875	0.875	0.98	0.98	0.656	0.621	0.286
5/8	15.88	11	18	0.94	0.94	1.05	1.05	0.765	0.731	0.329
3/4	19.05	10	16	1.125	1.06	1.24	1.19	0.89	0.827	0.382
7/8	22.23	9	14	1.313	1.25	1.447	1.4	1	0.922	0.45
1	25.40	8	12	1.5	1.44	1.653	1.62	1.124	1.018	0.513
1-1/8	28.58	7	12	1.69	1.63	1.86	1.83	1.281	1.176	0.576
1-1/4	31.75	7	12	1.875	1.82	2.066	2.05	1.422	1.272	0.628
1-3/8	34.93	6	12	2.06	2	2.273	2.26	1.609	1.4	0.681
1-1/2	38.10	6	12	2.25	2.188	2.48	2.47	1.671	1.53	0.757

Dimensions in inches (1 inch=25.4 mm) source IFI 100-107 table 3- prevailing-torque hex flange nuts
d Thread size		UNC (nr of threads x inch)	UNF (nr of threads x inch)	F basic	G min	H max	K min	J min
inches	mm
1/4	6.35	20	28	0.438	0.488	0.3	0.04	0.14
5/16	7.94	18	24	0.5	0.557	0.365	0.05	0.17
3/8	9.53	16	24	0.56	0.628	0.425	0.06	0.2
7/16	11.11	14	20	0.69	0.768	0.495	0.07	0.23
1/2	12.70	13	20	0.75	0.84	0.555	0.08	0.26
9/16	14.29	12	18	0.875	0.98	0.625	0.09	0.29
5/8	15.88	11	18	0.94	1.05	0.69	0.1	0.32
3/4	19.05	10	16	1.06	1.19	0.825	0.11	0.38