Machinery's Handbook, 31st Edition
WING NUTS, WING SCREWS AND THUMB SCREWS Table 3. American National Standard Type C Wing Nuts ANSI/ASME B18.17-1968 (Withdrawn)
1927
E
E
B
F
B
B
C
G
C
G
C
G
A D
E
A D
A D
STYLE 1
STYLE 2
STYLE 3
Nominal Size or Basic Major Diameter of Thread a 4 (0.1120) 5 (0.1250) 6 (0.1380) 8 (0.1640)
A
B
C
D
E
F
G
Nut Blank Size (Ref)
Wing Spread Boss Height Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Type C, Style 1 Wing Height Wing Thick. Between Wings Boss Dia. Boss Dia.
Thds. per Inch Series
40 Reg. AA 0.66 0.64 0.36 0.35 0.11 0.09 0.18 0.16 0.27 0.25 0.32 0.30 0.16 0.14 40 Reg. AA 0.66 0.64 0.36 0.35 0.11 0.09 0.18 0.16 0.27 0.25 0.32 0.30 0.16 0.14 32 Reg. AA 0.66 0.64 0.36 0.35 0.11 0.09 0.18 0.16 0.27 0.25 0.32 0.30 0.16 0.14 Hvy. A 0.85 0.83 0.43 0.42 0.14 0.12 0.29 0.27 0.38 0.36 0.41 0.40 0.20 0.18
32 Reg.
A 0.85 0.83 0.43 0.42 0.14 0.12 0.29 0.27 0.38 0.36 0.41 0.40 0.20 0.18 A 0.85 0.83 0.43 0.42 0.14 0.12 0.29 0.27 0.38 0.36 0.41 0.40 0.20 0.18
10 (0.1900) 24, 32 Reg.
Reg. A 0.85 0.83 0.43 0.42 0.14 0.12 0.29 0.27 0.38 0.36 0.41 0.40 0.20 0.18 Hvy. B 1.08 1.05 0.57 0.53 0.16 0.14 0.32 0.30 0.44 0.42 0.48 0.46 0.23 0.21
12 (0.2160)
24
1 ∕ 4 (0.2500) 20, 28 Reg. 5 ∕ 16 (0.3125) 18, 24 Reg. 3 ∕ 8 (0.3750) 16, 24 Reg.
B 1.08 1.05 0.57 0.53 0.16 0.14 0.32 0.30 0.44 0.42 0.48 0.46 0.23 0.21 C 1.23 1.20 0.64 0.62 0.20 0.18 0.39 0.35 0.50 0.49 0.57 0.55 0.26 0.24 D 1.45 1.42 0.74 0.72 0.23 0.21 0.46 0.42 0.62 0.60 0.69 0.67 0.29 0.27
Reg. E 1.89 1.86 0.91 0.90 0.29 0.28 0.67 0.65 0.75 0.73 0.83 0.82 0.38 0.37 Hvy. EH 1.89 1.86 0.93 0.91 0.34 0.33 0.63 0.62 0.81 0.79 0.89 0.87 0.42 0.40 Reg. E 1.89 1.86 0.91 0.90 0.29 0.28 0.67 0.65 0.75 0.73 0.83 0.82 0.38 0.37 Hvy. EH 1.89 1.86 0.93 0.91 0.34 0.33 0.63 0.62 0.81 0.79 0.89 0.87 0.42 0.40 Type C, Style 2
7 ∕ 16 (0.4375) 14, 20
1 ∕ 2 (0.5000) 13, 20
5 (0.1250) 6 (0.1380) 8 (0.1640)
40 … … 0.82 0.80 0.25 0.23 0.09 0.08 0.21 0.19 0.26 0.24 … … 0.17 0.15 32 … … 0.82 0.80 0.25 0.23 0.09 0.08 0.21 0.19 0.26 0.24 … … 0.17 0.15
32 … … 1.01 0.99 0.28 0.27 0.11 0.09 0.29 0.28 0.36 0.34 … … 0.19 0.18 10 (0.1900) 24, 32 … … 1.01 0.99 0.28 0.27 0.11 0.09 0.29 0.28 0.36 0.34 … … 0.19 0.18 12 (0.2160) 24 … … 1.20 1.18 0.32 0.31 0.12 0.11 0.38 0.37 0.44 0.43 … … 0.22 0.20 1 ∕ 4 (0.2500) 20 … … 1.20 1.18 0.32 0.31 0.12 0.11 0.38 0.37 0.44 0.43 … … 0.22 0.20 5 ∕ 16 (0.3125) 18 … … 1.51 1.49 0.36 0.35 0.14 0.12 0.44 0.43 0.51 0.49 … … 0.24 0.23 3 ∕ 8 (0.3750) 16 … … 1.89 1.86 0.58 0.55 0.20 0.17 0.44 0.43 0.63 0.62 … … 0.37 0.35 Type C, Style 3 5 (0.1250) 40 … … 0.92 0.89 0.70 0.67 0.16 0.15 0.26 0.24 0.38 0.36 … … 0.25 0.24 6 (0.1380) 32 … … 0.92 0.89 0.70 0.67 0.16 0.15 0.26 0.24 0.38 0.36 … … 0.25 0.24 8 (0.1640) 32 … … 0.92 0.89 0.70 0.67 0.16 0.15 0.26 0.24 0.38 0.36 … … 0.25 0.24 10 (0.1900) 24, 32 … … 1.14 1.12 0.85 0.83 0.19 0.17 0.32 0.30 0.44 0.42 … … 0.29 0.27 12 (0.2160) 24 … … 1.14 1.12 0.85 0.83 0.19 0.17 0.32 0.30 0.44 0.42 … … 0.29 0.27 1 ∕ 4 (0.2500) 20 … … 1.14 1.12 0.85 0.83 0.19 0.17 0.32 0.30 0.44 0.42 … … 0.29 0.27 5 ∕ 16 (0.3125) 18 … … 1.29 1.27 1.04 1.02 0.23 0.22 0.39 0.36 0.50 0.49 … … 0.35 0.34 3 ∕ 8 (0.3750) 16 … … 1.51 1.49 1.20 1.18 0.27 0.25 0.45 0.42 0.62 0.60 … … 0.43 0.42 a Where specifying nominal size in decimals, zeros in the fourth decimal place are omitted. All dimensions in inches. Sizes shown in bold face are preferred. Type C: Type C wing nuts are die-cast solid nuts and are available in three wing styles: Style 1, having wings of moderate height; Style 2, having low wings; and Style 3, having high wings. In some sizes, the Style 1 nuts are produced in regular, light, and heavy series to best suit the requirements of specific applications. Dimensions are given in Table 3.
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