Item # HTN11250XXX, Hex Thick Nut, 1-1/8" Nominal Dia. On Sales Systems Ltd.

Tops and Bearing Surface of Nuts. Nuts in sizes 5/8 in. nominal size and smaller shall be double chamfered. Larger size nuts shall be double chamfered or have washer faced bearing surface and chamfered top.
The diameter 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 percent 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

Unit of Measure

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

Industrial Fasteners Institute

Product	N/A Nuts
Unit of Measure	N/A English
Nominal Size or Basic Major Dia. of Thread	N/A 1-1/8 in
Nominal Size or Basic Major Dia. of Thread (Decimal)	N/A 1.1250 in
Basic Width Across Flats (F)	N/A 1-11/16 in
Max. Width Across Flats (F)	N/A 1.688 in
Min. Width Across Flats (F)	N/A 1.631 in
Max. Width Across Corners (G)	N/A 1.949 in
Min. Width Across Corners (G)	N/A 1.859 in
Basic Thickness (H)	N/A 1-5/32 in
Max. Thickness (H)	N/A 1.176 in
Min. Thickness (H)	N/A 1.136 in

ASME/ANSI B18.2.2 1987 (R 1999)

Max. Runout of Bearing Face, FIM (Specified Proof Load Up to 150,000 psi)	N/A 0.030 in
Max. Runout of Bearing Face, FIM (Specified Proof Load 150,000 psi and Greater)	N/A 0.025 in

Manufacturer