A flange nut offers a created-in washer (flange) that distributes the clamping load more than a broader location than an everyday lock nut. The look does not require a flat washer and is particularly the greater selection for an oversized or slotted hole. This great site works by using cookies https://auto-parts76531.bloguetechno.com/flange-bolts-things-to-know-before-you-buy-64161289