Zinc plated for moderate corrosion resistance. Grade 8 steel plain finish Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications. Zinc plated grade 5 steel A low carbon steel for general use.
A hexagonal head for use with a wrench. These bolts are sometimes called Frame bolts.
Full thread, Serrated
Grade 5 falls between grade 2 and grade 8 in strength, and is commonly found in automotive applications. Flange bolts have a circular flange under the head that acts like a washer to distribute the load. Flange bolts that are non-serrated are sometimes called frame bolts. Stainless steel 18-8 A corrosion resistant steel alloy. The most common stainless steel for general hardware use. Flange bolts have a flange on the bottom of the head that distributes the load like a washer.
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