Item # HSQN13750XXX, Heavy Square Nut, 1-3/8" Nominal Dia. On Sales Systems Ltd.

Tops of Nuts. Tops of nuts shall be flat and chamfered or washer crowned. Diameter of the chamfer circle shall be equal to the maximum width across flats within a tolerance of minus 15 percent. The surface of chamfer may be slightly convex or rounded.
Width Across Flats. Maximum width across flats shall not be exceeded. No transverse section through the nut between 25 and 75 percent of the actual nut thickness as measured from the bearing surface shall be less than the minimum width across flats.

Unit of Measure

Manufacturer | Specifications | Codes and Standards

Industrial Fasteners Institute

Product	N/A Nuts
Unit of Measure	N/A English
Nominal Size or Basic Major Dia. of Thread	N/A 1-3/8 in
Nominal Size or Basic Major Dia. of Thread (Decimal)	N/A 1.3750 in
Basic Width Across Flats (F)	N/A 2-3/16 in
Max. Width Across Flats (F)	N/A 2.188 in
Min. Width Across Flats (F)	N/A 2.119 in
Max. Width Across Corners (G)	N/A 3.094 in
Min. Width Across Corners (G)	N/A 2.879 in
Basic Thickness (H)	N/A 1-3/8 in
Max. Thickness (H)	N/A 1.409 in
Min. Thickness (H)	N/A 1.310 in

ASME/ANSI B18.2.2 1987 (R 1999)

Manufacturer