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heavy hex nut 1-3/8 envelope

heavy hex nut 1-3/8 envelope: hexagon 2.188 in across flats x 1.378 in thick (F max, H max), plain bore Ø1.3750 in at the thread major, thread not drawn

Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.

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Dimensions

typeheavy hex nut
size (in)1-3/8
UNC / UNF TPI6 / 12
F across flats max / min2.188 / 2.119
G across corners max / min2.526 / 2.416
H thickness max / min1.378 / 1.310
sourceAFT + Boltport
file: F max / H max (mm)55.58 / 35.0
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From the full sheet

Hex nuts, hex jam nuts and heavy hex nuts, inch 7/8 to 1-1/2 (ASME B18.2.2): across flats, thickness, UNC / UNF: every size, notes, mating features and sources. What are the across-flats width and thickness of a 7/8 to 1-1/2 inch hex nut, jam nut or heavy hex nut?

Other sizes