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.

Type B wing nuts are hot forged solid nuts available in two wing styles:
Style 1, having wings of moderate height; and
Style 2, having high wings.

ANSI Wing Nut

All Wing Nut dimensional data is in inches. 

Thread
Thds.
per
Inch
A
B
C
D
E
G
Wing
Spread
Wing
Height
Wing
Thickness
Between
Wings
Boss
Diameter
Boss
Height
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Type B, Style 1
5
(0.1250)
40
0.78
0.72
0.36
0.30
0.13
0.10
0.28
0.22
0.31
0.28
0.22
0.16
10
(0.1900)
24
0.97
0.91
0.45
0.39
0.15
0.12
0.34
0.28
0.39
0.36
0.28
0.22
1/4
(0.2500)
20
1.16
1.09
0.56
0.50
0.17
0.14
0.41
0.34
0.47
0.44
0.34
0.28
5/16
(0.3125)
18
1.44
1.38
0.67
0.61
0.18
0.15
0.50
0.44
0.55
0.52
0.41
0.34
3/8
(0.3750)
16
1.72
1.66
0.80
0.73
0.20
0.17
0.59
0.53
0.63
0.60
0.47
0.41
7/16
(0.4375)
14
2.00
1.94
0.91
0.84
0.21
0.18
0.69
0.62
0.71
0.68
0.53
0.47
1/2
(0.5000)
13
2.31
2.22
1.06
0.94
0.23
0.20
0.78
0.69
0.79
0.76
0.62
0.50
9/16
(0.5625)
12
2.59
2.47
1.17
1.05
0.25
0.21
0.88
0.78
0.88
0.84
0.69
0.56
5/8
(0.6250)
11
2.84
2.72
1.31
1.19
0.27
0.23
0.94
0.84
0.96
0.92
0.75
0.62
3/4
(0.7500)
10
3.31
3.19
1.52
1.39
0.29
0.25
1.10
1.00
1.12
1.08
0.88
0.75

ANSI Wing Nut

All Wing Nut dimensional data is in inches.

Thread
Thds.
per
Inch
A
B
C
D
E
G
Wing
Spread
Wing
Height
Wing
Thickness
Between
Wings
Boss
Diameter
Boss
Height
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Type B, Style 2
5
(0.1250)
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
(0.1900)
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
(0.2500)
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
(0.3125)
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
(0.3750)
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
(0.4375)
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
(0.5000)
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
(0.5625)
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
(0.6250)
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
(0.7500)
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

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