Hex Flange Nut

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Hex Flange Bolts are regular hex head bolts with a built-in washer and externally threaded body. Flange bolts come with a plain or serrated flange configuration. Hex flange bolts are used on vehicle frames, especially truck frames, and anywhere a hex washer head bolt is needed. The large bearing surface distributes clamping force over a large area, allowing them to be used with irregular and oversized holes.