Dimensions of ASME B18.31.5 Round Bend Hook Bolts

Pin Fields		Diameter D, and UNC Thread	Inside Length, L			Inside Width, C			Thread Length, T		Reference Radius, R	Hook Length, A
3,D	5, LCT		Basic	Max	Min	Basic	Max	Min	Max	Min		Max	Min
06	038	3/8 - 16	3.750	3.780	3.720	0.625	0.655	0.595	2.310	2.190	0.312	1.030	0.970
06	050	3/8 - 16	5.000	5.060	4.940	0.625	0.655	0.595	2.310	2.190	0.312	1.030	0.970
06	070	3/8 - 16	7.000	7.060	6.940	0.625	0.655	0.595	2.310	2.190	0.312	1.030	0.970
08	080	1/2 - 13	8.000	8.090	7.910	1.000	1.030	0.970	3.060	2.940	0.500	1.280	1.220

Notes :

• UNC Threads are standards for low strength materials, but UNF threads are usually available on special order.