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Where specifying nominal size in decimals, zeros in the fourth decimal place shall be omitted.
Unit of Measure

Manufacturer

Manufacturer

Industrial Fasteners Institute

Specifications

Product

Wing Nuts

Unit of Measure

English

Nominal Size or Basic Major Dia. of Thread

1/4 in

Nominal Size or Basic Major Dia. of Thread (Decimal)

0.2500 in

Max. Wing Spread (A)

1.11 in

Min. Wing Spread (A)

1.05 in

Max. Wing Height (B)

0.500 in

Min. Wing Height (B)

0.44 in

Max. Wing Thickness (C)

0.25 in

Min. Wing Thickness (C)

0.210 in

Min. Distance Between Wings (D)

0.34 in

Max. Boss Diameter (E)

0.62 in

Min. Boss Diameter (E)

0.56 in

Min. Boss Height (G)

0.11 in

Min. Wall Height (H)

0.12 in

Max. Stock Thickness (T)

0.050 in

Min. Stock Thickness (T)

0.040 in

Codes and Standards

Codes and Standards

ASME B18.6.X DRAFT STANDARD 2002

Threads Per Inch

Threads Per Inch

20 28