Dimensions of ASME B18.31.5 Bent Bolts, Closed Anchor Ring Eye Bolts

Pin Fields		Diameter D, and UNC Thread	Inside Length, L			Inside Width, C			Thread Length, T
3,D	5, LCT		Basic	Max	Min	Basic	Max	Min	Max	Min
03	015	10 - 24	1.500	1.530	1.470	0.375	0.385	0.365	0.935	0.815
03	018	10 - 24	1.813	1.843	1.783	0.313	0.323	0.303	1.310	1.190
03	025	10 - 24	2.500	2.530	2.470	0.375	0.385	0.365	1.060	0.940
03	035	10 - 24	3.500	3.530	3.470	0.375	0.385	0.365	1.560	1.440
04	018	1/4 - 20	1.750	1.780	1.720	0.500	0.515	0.485	0.935	0.815
04	023	1/4 - 20	2.250	2.280	2.220	0.500	0.515	0.485	1.310	1.190
04	028	1/4 - 20	2.750	2.780	2.720	0.500	0.515	0.485	1.310	1.190
04	033	1/4 - 20	3.250	3.280	3.220	0.500	0.515	0.485	1.310	1.190
04	038	1/4 - 20	3.750	3.780	3.720	0.500	0.515	0.485	1.560	1.440
04	048	1/4 - 20	4.750	4.780	4.720	0.500	0.515	0.485	2.560	2.440
04	058	1/4 - 20	5.750	5.810	5.690	0.500	0.515	0.485	3.060	2.940
04	068	1/4 - 20	6.750	6.810	6.690	0.500	0.515	0.485	4.060	3.940
05	018	5/16 - 18	1.813	1.843	1.783	0.625	0.640	0.610	0.935	0.815
05	028	5/16 - 18	2.813	2.843	2.783	0.625	0.640	0.610	1.310	1.190
05	038	5/16 - 18	3.813	3.843	3.783	0.625	0.640	0.610	1.560	1.440
05	048	5/16 - 18	4.813	4.843	4.783	0.625	0.640	0.610	2.560	2.440
06	021	3/8 - 16	2.125	2.155	2.095	0.750	0.765	0.735	0.935	0.815
06	031	3/8 - 16	3.125	3.155	3.095	0.750	0.765	0.735	1.310	1.190
06	036	3/8 - 16	3.625	3.655	3.595	0.750	0.765	0.735	1.560	1.440
06	041	3/8 - 16	4.125	4.155	4.095	0.750	0.765	0.735	1.560	1.440
06	051	3/8 - 16	5.125	5.185	5.065	0.750	0.765	0.735	2.560	2.440
06	061	3/8 - 16	6.125	6.185	6.065	0.750	0.765	0.735	3.060	2.940
06	071	3/8 - 16	7.125	7.185	7.065	0.750	0.765	0.735	4.060	3.940
08	035	1/2 - 13	3.500	3.530	3.470	1.000	1.015	0.985	1.560	1.440
08	055	1/2 - 13	5.500	5.560	5.44	1.000	1.015	0.985	2.560	2.440
08	075	1/2 - 13	7.500	7.560	7.440	1.000	1.015	0.985	4.060	3.940
12	083	3/4 - 10	8.250	8.340	8.160	0.875	0.890	0.860	3.060	2.940
12	103	3/4 - 10	10.250	10.340	10.160	0.875	0.890	0.860	3.060	2.940
12	133	3/4 - 10	13.250	13.370	13.130	0.875	0.890	0.860	3.060	2.940

Notes :

• UNC Threads are standards for low strength materials, but UNF threads are usually available on special order.
• Dimension C should be measured at maximum diameter of the inner circle.