Machinery's Handbook, 31st Edition
1928
WING NUTS, WING SCREWS AND THUMB SCREWS Table 4. American National Standard Type D Wing Nuts ANSI/ASME B18.17-1968 (Withdrawn)
B
E C
B
E C
H
H
G
E C
B
G
G H
A D
A D
A D
T
T
T STYLE 3 (LARGE BASE)
STYLE 1
STYLE 2 (LOW WING)
Nominal Size or Basic Major Diameter of Thread a 8 (0.1640) 10 (0.1900) 12 (0.2160) 1 ∕ 4 (0.2500) 5 ∕ 16 (0.3125) 3 ∕ 8 (0.3750) 5 (0.1250) 6 (0.1380) 8 (0.1640) 10 (0.1900) 12 (0.2160) 1 ∕ 4 (0.2500)
A
B
C
D
E
G H T
Wing Spread Stock Thick. Max. Min. Max. Min. Max. Min. Min. Max. Min. Min. Min. Max. Min. Type D, Style 1 Wing Height Wing Thick. Between Wings Boss Dia. Boss Hgt. Wall Hgt.
Thds. per Inch Series b
32, 36 24, 32 24, 28 20, 28 18, 24 16, 24
… 0.78 0.72 0.40 0.34 0.18 0.14 0.25 0.41 0.35 0.08 0.12 0.04 0.03 … 0.91 0.85 0.47 0.41 0.21 0.17 0.34 0.53 0.47 0.10 0.12 0.04 0.03 … 1.09 1.03 0.47 0.41 0.21 0.17 0.34 0.53 0.47 0.10 0.12 0.05 0.04 … 1.11 1.05 0.50 0.44 0.25 0.21 0.34 0.62 0.56 0.11 0.12 0.05 0.04 … 1.30 1.24 0.59 0.53 0.30 0.26 0.46 0.73 0.67 0.14 0.18 0.06 0.05 … 1.41 1.34 0.67 0.61 0.34 0.30 0.69 0.83 0.77 0.16 0.18 0.06 0.05 Type D, Style 2
40 32 32
Reg. Reg. Reg. Hvy. Reg. Reg. Reg. Reg. Lgt. Reg. Hvy. Reg. Hvy.
1.03 0.97 0.25 0.19 0.19 0.13 0.30 0.40 0.34 0.07 0.09 0.04 0.03 1.03 0.97 0.25 0.19 0.19 0.13 0.30 0.40 0.34 0.08 0.09 0.04 0.03 1.03 0.97 0.25 0.19 0.19 0.13 0.30 0.40 0.34 0.08 0.09 0.04 0.03 1.40 1.34 0.34 0.28 0.25 0.18 0.32 0.53 0.47 0.09 0.16 0.05 0.04 1.21 1.16 0.28 0.26 0.31 0.25 0.60 0.61 0.55 0.09 0.13 0.05 0.04 1.21 1.16 0.28 0.26 0.31 0.25 0.60 0.61 0.55 0.11 0.13 0.05 0.04 1.21 1.16 0.28 0.26 0.31 0.25 0.60 0.61 0.55 0.11 0.13 0.05 0.04 Type D, Style 3 1.31 1.25 0.48 0.42 0.29 0.23 0.47 0.65 0.59 0.08 0.12 0.04 0.03 1.40 1.34 0.53 0.47 0.25 0.19 0.50 0.75 0.69 0.08 0.14 0.04 0.03 1.28 1.22 0.40 0.34 0.23 0.17 0.59 0.73 0.67 0.11 0.12 0.04 0.03 1.28 1.22 0.40 0.34 0.23 0.17 0.59 0.73 0.67 0.11 0.12 0.04 0.03 1.78 1.72 0.66 0.60 0.31 0.25 0.70 1.03 0.97 0.14 0.17 0.06 0.04 1.47 1.40 0.50 0.44 0.37 0.31 0.66 1.03 0.97 0.14 0.14 0.08 0.06 1.78 1.72 0.66 0.60 0.31 0.25 0.70 1.03 0.97 0.14 0.17 0.06 0.04
24, 32 Reg.
24 20
10 (0.1900)
24, 32 Lgt.
12 (0.2160)
24
20
1 ∕ 4 (0.2500)
18
5 ∕ 16 (0.3125)
1.47 1.40 0.50 0.44 0.37 0.31 0.66 1.03 0.97 0.14 0.14 0.08 0.06 a Where specifying nominal size in decimals, zeros in the fourth decimal place are omitted. b Lgt. = Light; Hvy. = Heavy; Reg. = Regular. All dimensions in inches. Type D: Type D wing nuts are stamped sheet metal nuts and are available in three styles: Style 1, having wings of moderate height; Style 2, having low wings; and Style 3, having wings of moderate height and a larger bearing surface. In some sizes, Styles 2 and 3 are produced in regular, light, and heavy series to best suit the requirements of specific appli cations. Dimensions are given in Table 4. Specification of Wing Nuts.— When specifying wing nuts, the following data should be included in the designation and should appear in the following sequence: nominal size (number, fraction or decimal equivalent), threads per inch, type, style and/or series, mate rial, and finish. Examples: 10–32 Type A Wing Nut, Regular Series, Steel, Zinc Plated. 0.250–20 Type C Wing Nut, Style 1, Zinc Alloy, Plain. Threads for Wing Nuts.— Threads are in conformance with the ANSI Standard Unified Thread, Class 2B for all types of wing nuts except type D which have a modified Class 2B thread. Because of the method of manufacture, the minor diameter of the thread in type D
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