Flange bolts have a circular flange under the head that acts like a washer to distribute the load.
Item Tag: M8x20mm 10pcs
10Pcs M8-1.25 X 20Mm Flanged Hex Head Bolts Flange Hexagon Screws, Stainless Steel 18-8 (304), Plain Finish. Thread Size M8. Flange bolts have a circular flange under the head that acts like a washer to distribute the load.