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Unit of Measure

Manufacturer

Manufacturer

Industrial Fasteners Institute

Specifications

Product

Structural Bolting

Unit of Measure

English

Nominal Size or Basic Major Dia. of Thread

1"- 8

Ref. Thread Length (LT)

1.75 in

Ref. Spline Length (LS)

0.80 in

Ref. Spline Width Across Flats (S)

0.70 in

Max. Center of Groove to 1st Fully Formed Thread (U)

0.313 in

Ref. Transition Thread Length (Y)

0.31 in

Codes and Standards

Codes and Standards

ASME Draft Revision B18.2.6 2003

Threads Per Inch

Threads Per Inch

1.000

Heavy Hex Head Specifications

Max. Width Across Flats (F)

1.625 in

Min. Width Across Flats (F)

1.575 in

Max. Width Across Corners (G)

1.876 in

Min. Width Across Corners (G)

1.796 in

Heavy Hex & Round Head Specifications

Max. Head Height (H)

0.627 in

Min. Head Height (H)

0.591 in

Max. Full-Size Body Dia. (E)

1.022 in

Min. Full-Size Body Dia. (E)

0.976 in

Round Head Specifications

Min. Bearing Dia. (C)

1.771 in

Max. Head Dia. (A)

2.158 in