Machinery's Handbook, 31st Edition
1930
WING NUTS, WING SCREWS AND THUMB SCREWS Table 5. American National Standard Types A and B Wing Screws ANSI/ASME B18.17-1968 (Withdrawn)
E
B L
E
E
B L
B L
C G
C
C
G
G
see note 1
A
A
A
Shank permanently inserted into wing portion
see note 1
see note 1
Style 1
Style 2
TYPE A
TYPE B
A
B
C
E
G
L
Nominal Size or Basic Major Diameter a 4 (0.1120) 6 (0.1380)
Wing Spread Practical Screw Lengths Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Type A Wing Height Wing Thick. Boss Dia. Boss Height.
Head Blank size (Ref)
Thds. per Inch Series b
40 32
Hvy. Lgt. Hvy. Lgt. Hvy. Lgt. Hvy. Lgt. Hvy. Lgt. Reg. Hvy. Lgt. Reg. Hvy. Lgt. Reg. Hvy. Lgt. Hvy. Lgt. Hvy. Hvy.
AA 0.72 0.59 0.41 0.28 0.11 0.07 0.33 0.29 0.14 0.10 0.75 0.25
AA 0.72 0.59 0.41 0.28 0.11 0.07 0.33 0.29 0.14 0.10 A 0.91 0.78 0.47 0.34 0.14 0.10 0.43 0.39 0.18 0.14 A 0.91 0.78 0.47 0.34 0.14 0.10 0.43 0.39 0.18 0.14 B 1.10 0.97 0.57 0.43 0.18 0.14 0.50 0.45 0.22 0.17 A 0.91 0.78 0.47 0.34 0.14 0.10 0.43 0.39 0.18 0.14 B 1.10 0.97 0.57 0.43 0.18 0.14 0.50 0.45 0.22 0.17 B 1.10 0.97 0.57 0.43 0.18 0.14 0.50 0.45 0.22 0.17 C 1.25 1.12 0.66 0.53 0.21 0.17 0.58 0.51 0.25 0.20 B 1.10 0.97 0.57 0.43 0.18 0.14 0.50 0.45 0.22 0.17 C 1.25 1.12 0.66 0.53 0.21 0.17 0.58 0.51 0.25 0.20 D 1.44 1.31 0.79 0.65 0.24 0.20 0.70 0.64 0.30 0.26 C 1.25 1.12 0.66 0.53 0.21 0.17 0.58 0.51 0.25 0.20 D 1.44 1.31 0.79 0.65 0.24 0.20 0.70 0.64 0.30 0.26 E 1.94 1.81 1.00 0.87 0.33 0.26 0.93 0.86 0.39 0.35 D 1.44 1.31 0.79 0.65 0.24 0.20 0.70 0.64 0.30 0.26 E 1.94 1.81 1.00 0.87 0.33 0.26 0.93 0.86 0.39 0.35 F 2.76 2.62 1.44 1.31 0.40 0.34 1.19 1.13 0.55 0.51 E 1.94 1.81 1.00 0.87 0.33 0.26 0.93 0.86 0.39 0.35 F 2.76 2.62 1.44 1.31 0.40 0.34 1.19 1.13 0.55 0.51 E 1.94 1.81 1.00 0.87 0.33 0.26 0.93 0.86 0.39 0.35 2.76 2.62 1.44 1.31 0.40 0.34 1.19 1.13 0.55 0.51 F
} 0.75 0.25
8 (0.1640)
32
} 0.75 0.38
10 (0.1900)
24, 32
} 1.00 0.38
12 (0.2160)
24
} 1.00 0.38
20
} 1.50 0.50
1 ∕ 4 (0.2500)
18
} 1.50 0.50
5 ∕ 16 (0.3125)
16
} 2.00 0.75
3 ∕ 8 (0.3750)
14
} 4.00 1.00
7 ∕ 16 (0.4375)
13 11 24 20 18 16 14 13 11 24 20 18 16
} 4.00 1.00
1 ∕ 2 (0.5000) 5 ∕ 8 (0.6250) 10 (0.1900) 1 ∕ 4 (0.2500) 5 ∕ 16 (0.3125) 3 ∕ 8 (0.3750) 7 ∕ 16 (0.4375) 1 ∕ 2 (0.5000) 5 ∕ 8 (0.6250) 10 (0.1900) 1 ∕ 4 (0.2500) 5 ∕ 16 (0.3125) 3 ∕ 8 (0.3750)
F 2.76 2.62 1.44 1.31 0.40 0.34 1.19 1.13 0.55 0.51 4.00 1.25 Type B, Style 1
… … 0.97 0.91 0.45 0.39 0.15 0.12 0.39 0.36 0.28 0.22 2.00 0.50 … … 1.16 1.09 0.56 0.50 0.17 0.14 0.47 0.44 0.34 0.28 3.00 0.50 … … 1.44 1.38 0.67 0.61 0.18 0.15 0.55 0.52 0.41 0.34 3.00 0.50 … … 1.72 1.66 0.80 0.73 0.20 0.17 0.63 0.60 0.47 0.41 4.00 0.50 … … 2.00 1.94 0.91 0.84 0.21 0.18 0.71 0.68 0.53 0.47 3.00 1.00 … … 2.31 2.22 1.06 0.94 0.23 0.20 0.79 0.76 0.62 0.50 3.00 1.00 … … 2.84 2.72 1.31 1.19 0.27 0.23 0.96 0.92 0.75 0.62 2.50 1.00 Type B, Style 2 … … 1.01 0.95 0.78 0.72 0.14 0.11 0.39 0.36 0.28 0.22 1.25 0.50 … … 1.22 1.16 0.94 0.88 0.16 0.13 0.47 0.44 0.34 0.28 2.00 0.50 … … 1.43 1.37 1.09 1.03 0.17 0.14 0.55 0.52 0.41 0.34 2.00 0.50 … … 1.63 1.57 1.25 1.19 0.18 0.15 0.63 0.60 0.47 0.41 2.00 0.50
All dimensions in inches. Sizes shown in bold face are preferred. 1 Plain point, unless alternate point from styles shown in Table 8 is specified by user. a Where specifying nominal size in decimals, zeros in the fourth decimal place are omitted. b Hvy. = Heavy; Lgt. = Light; Reg. = Regular.
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