WING NUT DIMENSIONS CHART

Wing nut (inch series) dimensions sizes chart according to ASME B18.6.9. Wing nut is a nut with wings which is designed for manual turning without driver or wrench. The wing nuts are classified by type, on the basis of manufacturing method and by design characteristics. Type A wing nuts are cold forged or cold formed solid nuts having wings of moderate height.

Dimensions of Type A Wing Nuts

1/2 inch-13 Wing Nut Dimensions:

Threads per inch : 13, Series: Light, Amax: 1.94 inch, Amin: 1.81 inch, Bmax: 1.00 inch, Bmin: 0.87 inch

Nominal Size or
Basic Major Dia.
of Thread		 Threads
per inch		 Series 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.
3 (0.0990) 48
56		 Heavy 0.72 0.59 0.41 0.28 0.11 0.07 0.21 0.17 0.33 0.29 0.14 0.10
4 (0.1120) 40
48		 Heavy 0.72 0.59 0.41 0.28 0.11 0.07 0.21 0.17 0.33 0.29 0.14 0.10
5 (0.1250) 40
44		 Light 0.72 0.59 0.41 0.28 0.11 0.07 0.21 0.17 0.33 0.29 0.14 0.10
5 (0.1250) 40
44		 Heavy 0.91 0.78 0.47 0.34 0.14 0.10 0.27 0.22 0.43 0.39 0.18 0.14
6 (0.1380) 32
40		 Light 0.72 0.59 0.41 0.28 0.11 0.07 0.21 0.17 0.33 0.29 0.14 0.10
6 (0.1380) 32
40		 Heavy 0.91 0.78 0.47 0.34 0.14 0.10 0.27 0.22 0.43 0.39 0.18 0.14
8 (0.1640) 32
36		 Light 0.91 0.78 0.47 0.34 0.14 0.10 0.27 0.22 0.43 0.39 0.18 0.14
8 (0.1640) 32
36		 Heavy 1.10 0.97 0.57 0.43 0.18 0.14 0.33 0.26 0.50 0.45 0.22 0.17
10 (0.1900) 24
32		 Light 0.91 0.78 0.47 0.34 0.14 0.10 0.27 0.22 0.43 0.39 0.18 0.14
10 (0.1900) 24
32		 Heavy 1.10 0.97 0.57 0.43 0.18 0.14 0.33 0.26 0.50 0.45 0.22 0.17
12 (0.2160) 24
28		 Light 1.10 0.97 0.57 0.43 0.18 0.14 0.33 0.26 0.50 0.45 0.22 0.17
12 (0.2160) 24
28		 Heavy 1.25 1.12 0.66 0.53 0.21 0.17 0.39 0.32 0.58 0.51 0.25 0.20
1/4 (0.2500) 20
28		 Light 1.10 0.97 0.57 0.43 0.18 0.14 0.33 0.26 0.50 0.45 0.22 0.17
1/4 (0.2500) 20
28		 Regular 1.25 1.12 0.66 0.53 0.21 0.17 0.39 0.32 0.58 0.51 0.25 0.20
1/4 (0.2500) 20
28		 Heavy 1.44 1.31 0.79 0.65 0.24 0.20 0.48 0.42 0.70 0.64 0.30 0.26
5/16 (0.3125) 18
24		 Light 1.25 1.12 0.66 0.53 0.21 0.17 0.39 0.32 0.58 0.51 0.25 0.20
5/16 (0.3125) 18
24		 Regular 1.44 1.31 0.79 0.65 0.24 0.20 0.48 0.42 0.70 0.64 0.30 0.26
5/16 (0.3125) 18
24		 Heavy 1.94 1.81 1.00 0.87 0.33 0.26 0.65 0.54 0.93 0.86 0.39 0.35
3/8 (0.3750) 16
24		 Light 1.44 1.31 0.79 0.65 0.24 0.20 0.48 0.42 0.70 0.64 0.30 0.26
3/8 (0.3750) 16
24		 Regular 1.94 1.81 1.00 0.87 0.33 0.26 0.65 0.54 0.93 0.86 0.39 0.35
7/16 (0.4375) 14
20		 Light 1.94 1.81 1.00 0.87 0.33 0.26 0.65 0.54 0.93 0.86 0.39 0.35
7/16 (0.4375) 14
20		 Heavy 2.76 2.62 1.44 1.31 0.40 0.34 0.90 0.80 1.19 1.13 0.55 0.51
1/2 (0.5000) 13
20		 Light 1.94 1.81 1.00 0.87 0.33 0.26 0.65 0.54 0.93 0.86 0.39 0.35
1/2 (0.5000) 13
20		 Heavy 2.76 2.62 1.44 1.31 0.40 0.34 0.90 0.80 1.19 1.13 0.55 0.51
9/16 (0.5625) 12
18		 Heavy 2.76 2.62 1.44 1.31 0.40 0.34 0.90 0.80 1.19 1.13 0.55 0.51
5/8 (0.6250) 11
18		 Heavy 2.76 2.62 1.44 1.31 0.40 0.34 0.90 0.80 1.19 1.13 0.55 0.51
3/4 (0.7500) 10
16		 Heavy 2.76 2.62 1.44 1.31 0.40 0.34 0.90 0.80 1.19 1.13 0.55 0.51

Note : Sizes shown in bold are preferred.

Supplements:

Reference:

  • ASME B18.6.9-2010 — Wing Nuts (Inch Series)