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Unit of Measure

Manufacturer

Manufacturer

N/A Industrial Fasteners Institute

Specifications

Product

N/A Nuts

Unit of Measure

N/A English

Nominal Size or Basic Major Dia. of Thread

N/A 1/4 in

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

N/A 0.2500 in

Basic Width Across Flats (F)

N/A 1/2 in

Max. Width Across Flats (F)

N/A 0.500 in

Min. Width Across Flats (F)

N/A 0.488 in

Max. Width Across Corners (G)

N/A 0.577 in

Min. Width Across Corners (G)

N/A 0.556 in

Basic Thickness (H)

N/A 15/64 in

Max. Thickness (H)

N/A 0.250 in

Min. Thickness (H)

N/A 0.218 in

Max. Unslotted Thickness (T)

N/A 0.15 in

Min. Unslotted Thickness (T)

N/A 0.13 in

Max. Width of Slot (S)

N/A 0.100 in

Min. Width of Slot (S)

N/A 0.07 in

Max. Runout of Bearing Surface FIM

N/A 0.017 in

Codes and Standards

Codes and Standards

N/A ASME/ANSI B18.2.2 1987 (R 1999)