ANSI Inch Size Wing Nut Specification Chart Type A
ANSI Hardware Design & Engineering
Wing Dimensional Data per. ANSI B18.17 - Wing nut is a nut having wings designed for easy manual turning without driver or wrench.
ANSI B18.17 wing nuts are classified first, by type on the basis of the method of manufacture; and second, by style on the basis of design characteristics.
Type A wing nuts are cold forged or cold formed solid nuts having wings of moderate height. In some sizes they are produced in regular, light, and heavy series to best suit the requirements of specific applications.
Notes: LGT = Light, Hvy = Heavy, Reg. = Regular. Sizes shown as bold are design preferred.
All dimensional data is in inches.
| Size
|
Thds
per Inch |
Series
|
A
|
B
|
C
|
D
|
E
|
G
|
||||||
Wing
Spread
|
Wing
Height
|
Wing
Thick.
|
Between
Wings
|
Boss
Dia.
|
Boss
Height
|
|||||||||
Max
|
Min
|
Max
|
Min
|
Max
|
Min
|
Max
|
Min
|
Max
|
Min
|
Max
|
Min
|
|||
3
(0.0990) |
48,
56 |
Hvy.
|
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,
38 |
Hvy.
|
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 |
Lgt.
|
0.72
|
0.59
|
0.41
|
0.28
|
0.11
|
0.07
|
0.21
|
0.17
|
0.33
|
0.29
|
0.14
|
0.10
|
Hvy.
|
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 |
Lgt.
|
0.72
|
0.59
|
0.41
|
0.28
|
0.11
|
0.07
|
0.21
|
0.17
|
0.33
|
0.29
|
0.14
|
0.10
|
Hvy.
|
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 |
Lgt.
|
0.91
|
0.78
|
0.47
|
0.34
|
0.14
|
0.10
|
0.27
|
0.22
|
0.43
|
0.39
|
0.18
|
0.14
|
Hvy.
|
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 |
Lgt.
|
0.91
|
0.78
|
0.47
|
0.34
|
0.14
|
0.10
|
0.27
|
0.22
|
0.43
|
0.39
|
0.18
|
0.14
|
Hvy.
|
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 |
Lgt.
|
1.10
|
0.97
|
0.57
|
0.43
|
0.18
|
0.14
|
0.33
|
0.26
|
0.50
|
0.45
|
0.22
|
0.17
|
Hvy.
|
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 |
Lgt.
|
1.10
|
0.97
|
0.57
|
0.43
|
0.18
|
0.14
|
0.39
|
0.26
|
0.50
|
0.45
|
0.22
|
0.17
|
Reg.
|
1.25
|
1.12
|
0.66
|
0.53
|
0.21
|
0.17
|
0.39
|
0.32
|
0.58
|
0.51
|
0.25
|
0.20
|
||
Hvy.
|
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 |
Lgt.
|
1.25
|
1.12
|
0.66
|
0.53 |
0.21 |
0.17 |
0.39 |
0.32 |
0.58 |
0.51 |
0.25 |
0.20 |
Reg.
|
1.44
|
1.31
|
0.79
|
0.65
|
0.24
|
0.20
|
0.48
|
0.42
|
0.70
|
0.64
|
0.30
|
0.26
|
||
Hvy.
|
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 |
Lgt.
|
1.44
|
1.31
|
0.79
|
0.65
|
0.24
|
0.20
|
0.48
|
0.42
|
0.70
|
0.64
|
0.30
|
0.26
|
Reg.
|
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 |
Lgt.
|
1.94
|
1.81
|
1.00
|
0.87
|
0.33
|
0.26
|
0.65
|
0.54
|
0.93
|
0.86
|
0.39
|
0.35
|
Hvy.
|
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 |
Lgt.
|
1.94
|
1.81
|
1.00
|
0.87
|
0.33
|
0.26
|
0.65
|
0.54
|
0.93
|
0.86
|
0.39
|
0.35
|
Hvy.
|
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 |
Hvy.
|
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 |
Hvy.
|
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 |
Hvy.
|
2.76
|
2.62
|
1.44
|
1.31
|
0.40
|
0.34
|
0.90
|
0.80
|
1.19
|
1.13
|
0.55
|
0.51
|
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