The Hillman Group 44085 M12-1.75 X 35 Metric Flange Bolt, 5-Pack

A flange bolt is a one-piece hex washer head bolt with a flat bearing surface. The flange eliminates the need for a flat washer and helps compensate for a misaligned hole. When used with a proper class flange nut, the bolt system resists bolt slippage by distributing the clamp load over a wide area.