Back Home / Fasteners / Bolts / HEX FLANGE BOLT SERRATED UNC ZINC 1/4″-20 X 3/4″ GR 8 HEX FLANGE BOLT SERRATED UNC ZINC 1/4″-20 X 3/4″ GR 8 SKU: X1420X34HF8Z Categories: Bolts, Fasteners An unslotted hex head screw with unified thread pitch and a flange that has serrations on the bearing surface side. For use in applications where loosening forces are present, such as vibration. The serrations grip to the bearing surface. Flange provides more strength than a standard machine screw. Diameter 1/4″ Case Quantity: 100 Log In For Pricing