└ Hardware, parts
         └ nut (as in nut and bolt)
            ├ hex nut
            ├ kaleinut
            ├ U Nut
            ├ wheel nut
            ├ Insert Nuts
            ├ High nut
            ├ wing nut
            ├ double-sided nut
            ├ pop nut
            ├ double nut
            ├ blind nut
            ├ Bearing Nut
            ├ bolt nut
            ├ hard locknut
            ├ Nylon Nut
            └ Other Nuts
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