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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

2-3/4 in

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

2.7500 in

Basic Width Across Flats (F)

4-1/4 in

Max. Width Across Flats (F)

4.250 in

Min. Width Across Flats (F)

4.112 in

Max. Width Across Corners (G)

4.907 in

Min. Width Across Corners (G)

4.688 in

Basic Thickness (H)

2-45/64 in

Max. Thickness (H)

2.759 in

Min. Thickness (H)

2.647 in

Codes and Standards

Codes and Standards

ASME/ANSI B18.2.2 1987 (R 1999)

Runout of Bearing Face, FIM

Max. Runout of Bearing Face, FIM (Specified Proof Load Up to 150,000 psi)

0.074 in

Max. Runout of Bearing Face, FIM (Specified Proof Load 150,000 psi and Greater)

0.064 in