Item # HHNSB05000XXX, Heavy Hex Nut for Use with Structural Bolts, with 7/8" Width Across Flat On Sales Systems Ltd.

Unification. Only the 9/16 size is not unified dimensionally with British and Canadian standards.
Tops and Bearing Surfaces of Nuts. Nuts may be double chamfered or have washer faced bearing surface and chamfered top.
The of chamfer circle on double chamfered nuts and diameter of washer face shall be within the limits of the maximum width across flats and 95% of the minimum width across flats.
The tops of washer faced nuts shall be flat and the diameter of chamfer circle shall be equal to the

Unit of Measure

Manufacturer | Specifications | Codes and Standards | Runout of Bearing Face, FIM

Industrial Fasteners Institute

Product	N/A Structural Bolting
Unit of Measure	N/A English
Nominal Size or Basic Major Diameter of Thread	N/A 1/2 in
Nominal Size or Basic Major Diameter of Thread (Decimal)	N/A 0.5000 in
Nominal Width Across Flats (F)	N/A 7/8 in
Max. Width Across Flats (F)	N/A 0.875 in
Min. Width Across Flats (F)	N/A 0.850 in
Max. Width Across Corners (G)	N/A 1.010 in
Min. Width Across Corners (G)	N/A 0.969 in
Nominal Thickness (H)	N/A 31/64 in
Max. Thickness (H)	N/A 0.504 in
Min. Thickness (H)	N/A 0.464 in

ASME Draft Revision B18.2.6 2003

Max. Runout of Bearing Face, FIM (Specified Proof Load Up to 150,000 psi)	N/A 0.023 in
Max. Runout of Bearing Face, FIM (Specified Proof Load 150,000 psi and Greater)	N/A 0.016 in

Manufacturer