These hex bolts are made from A307 Grade A steel and feature a coarse thread, making them ideal for various applications requiring strong and durable fastening solutions. They are hot dip galvanized (HDG) to provide enhanced corrosion resistance, making them suitable for use in outdoor and exposed environments. The 1-8x10' size indicates a 1-inch diameter, 8 threads per inch, and a 10-inch length, providing the necessary specifications for heavy-duty applications.