The HEX FLANGE NUT ZINC 5/16"-18 features a wide flange that acts as an integrated washer, distributing pressure evenly over the secured part. This design reduces the risk of loosening due to uneven surfaces, making it an excellent choice for various applications in automotive and industrial settings. Constructed from Grade A case-hardened steel and serrated for enhanced grip, this nut ensures reliable fastening and durability in demanding conditions.