Dimensions of ASME B18.6.9 Wing Nuts, Type D Style 1

Nominal Size or Basic Major Diameter of Thread	Threads per inch	Wing Spread, A		Wing Height, B		Wing Thickness, C		Minimum Between Wings, D	Boss Diameter, E		Minimum Boss Height, G	Minimum Wall Height, H	Stock Thickness, T
		Max	Min	Max	Min	Max	Min		Max	Min			Max	Min
8	32 and 36	0.78	0.72	0.40	0.34	0.18	0.14	0.25	0.41	0.35	0.08	0.12	0.04	0.03
10	24 and 32	0.91	0.85	0.47	0.41	0.21	0.17	0.34	0.53	0.47	0.10	0.12	0.04	0.03
12	24 and 28	1.09	1.03	0.47	0.41	0.21	0.17	0.34	0.53	0.47	0.10	0.12	0.05	0.04
1/4	20 and 28	1.11	1.05	0.50	0.44	0.25	0.21	0.34	0.62	0.56	0.11	0.12	0.05	0.04
5/16	18 and 24	1.30	1.24	0.59	0.53	0.30	0.26	0.46	0.73	0.67	0.14	0.18	0.06	0.05
3/8	16 and 24	1.41	1.34	0.67	0.61	0.34	0.30	0.69	0.83	0.77	0.16	0.18	0.06	0.05