Hex and Jam Nut Size Table Chart

Hardware ANSI Menu

The following tables provide Hex Nut and Jam Nut dimensions per ASME B18.2.2.

Hex Nut
Hex Nut
BASIC
Thread
DIA
F
Flat Width
H
Thickness
.25 0.438 0.219
.75 1.125 0.641
.875  1.312 0.750
 1 1.500 0.859
1.125  1.688 0.96
1.25 1.875 1.063
1.375 2.062 1.172
1.5 2.250 1.281
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Hex Jam Nut

Hex Jam Nut

Basic
Thread Dia.

F
Flat Width
H
Thickness
.25 0.438 0.150
.75  1.1250  0.4220
.875 1.312 0.484
1 1.500 0.547
1.125 1.688 0.609
1.25 1.875 0.719
1.375 2.062 0.781
 1.5 2.250 0.844

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