Hex nuts, Zinc plated steel, Coarse (standard) thread, 18

Nut size (A.K.A. diameter) is the size bolt that the nut is used with. The same is true of the thread count. Thus a 1/4"-20 nut fits a 1/4"-20 bolt.
See also |
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![]() Hex machine screw nuts, Zinc plated steelA hex nut in smaller sizes for machine screw diameters under 1/4". |
![]() Metric hex nutsA standard six sided nut. |
![]() Hex nylon insert lock nuts, Zinc plated steelA hex nut with a nylon ring to resist loosening. |