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  • Unification. Bold type indicates products unified dimensionally with British and Canadian standards.
  • Smaller Sizes. For sizes 1/4 in. through 1 in., the nuts specified in Table are recommended.
  • Tops of Nuts. Tops of nuts shall be flat and chamfered. Diameter of the chamfer circle shall be equal to the maximum width across flats within a tolerance of minus 15 percent. The length of chamfer at hex corners shall be from 5 to 15 percent of the basic thread diameter. The surface of chamfer may be
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Unit of Measure

Manufacturer

Manufacturer

Industrial Fasteners Institute

Specifications

Product

Nuts

Unit of Measure

English

Nominal Size or Basic Major Dia. of Thread

1-1/8 in

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

1.1250 in

Basic Width Across Flats (F)

1-13/16 in

Max. Width Across Flats (F)

1.812 in

Min. Width Across Flats (F)

1.756 in

Max. Width Across Corners (G)

2.093 in

Min. Width Across Corners (G)

2.002 in

Basic Thickness (H)

1-1/8 in

Max. Thickness (H)

1.155 in

Min. Thickness (H)

1.079 in

Codes and Standards

Codes and Standards

ASME/ANSI B18.2.2 1987 (R 1999)