This flange bolt is a genuine OEM replacement part for use in lawn and outdoor equipment. It has a diameter of 6mm and a length of 12mm. The bolt has a wider circular area that protrudes out from the bolt head, known as a flange. The flange prevents the bolt from moving or loosening during use. Over time the bolt may corrode, crack, or it...Read mores threads may wear down. In this case the bolt will need to be replaced. Visually inspect the other bolts in your equipment to ensure your order the correct number, as each bolt is sold individually. Use a wrench to remove any faulty bolts and install the new bolts in place. Be careful not to overtighten your bolts as you may risk damaging the equipment and the bolt.