Flange nuts serrated, Zinc plated steel, Coarse (standard) thread, 13
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.
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Metric flange nuts serratedA nut with a built in washer which is serrated to resist loosening. |
Flange boltsFlange bolts have a flange on the bottom of the head that distributes the load like a washer. |