Metric Flange Bolts, Serrated, Class 8.8 Zinc

METRIC CLASS 8.8 HEX FLANGE BOLT, SERRATED, DIN 6921, ZINC CR+3

Metric flange bolts have a ridge or skirt (flange) around the bolt head that distributes the clamping load when the bolt is tightened. The flange works like a washer. Flange bolts are sometimes called frame bolts.