Metric flange bolts have a skirt flaring out from the base of the head around its entire perimeter. This extended base helps distribute force across a greater surface, so when the bolt is tightened down, the pressure helps keep a wider surface secure. This bolt design is often used in automotive applications, though it's useful in others, such as electronics and plumbing. The integrated flare makes metric flanged bolts a good choice for hard-to-reach applications where securing both a bolt and washer while using a tool would be difficult. Clips and Fasteners' extensive assortment of metric flange head bolts offers numerous lengths, diameters, head sizes, head height, wrench size and flange diameter. Some are fully threaded while others are partial. Whether you are looking for stainless steel metric flange bolts or a m12x1.25 flange bolt plated with zinc, you can find it in our inventory. Our metric inventory goes from 4mm in diameter up to 16mm in diameter. Which size would work best for your project?