Dimensions of ASME B18.6.9 Wing Nuts, Type B Style 2

Nominal Size or Basic Major Dia. of Thread	Threads per inch	Wing Spread, A		Wing Height, B		Wing Thickness, C		Between Wings, D		Boss Diameter, E		Boss Height, G
		Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min
5	40	0.81	0.75	0.62	0.56	0.12	0.09	0.28	0.22	0.31	0.28	0.22	0.16
10	24	1.01	0.95	0.78	0.72	0.14	0.11	0.35	0.29	0.39	0.36	0.28	0.22
1/4	20	1.22	1.16	0.94	0.88	0.16	0.13	0.41	0.35	0.47	0.44	0.34	0.28
5/16	18	1.43	1.37	1.09	1.03	0.17	0.14	0.48	0.42	0.55	0.52	0.41	0.34
3/8	16	1.63	1.57	1.25	1.19	0.18	0.15	0.55	0.49	0.63	0.60	0.47	0.41
7/16	14	1.90	1.84	1.42	1.36	0.19	0.16	0.62	0.56	0.71	0.68	0.53	0.47
1/2	13	2.13	2.04	1.58	1.45	0.20	0.17	0.69	0.60	0.79	0.76	0.62	0.50
9/16	12	2.40	2.28	1.75	1.62	0.22	0.18	0.76	0.67	0.88	0.84	0.69	0.56
5/8	11	2.60	2.48	1.91	1.78	0.23	0.19	0.83	0.74	0.96	0.92	0.75	0.62
3/4	10	3.02	2.90	2.22	2.09	0.24	0.20	0.97	0.88	1.12	1.08	0.88	0.75

Note :

• Sizes shown in boldface are preferred.