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Hex bolts are the industry standard for fasteners. They have a threaded body and a hexagon-shaped head that requires an accordingly sized spanner or socket wrench to turn. Hex bolts are used in various applications that need fastening of wood, steel, and other materials for construction, automobile, and manufacturing industries among others. Grade 8 steel bolts are typically used in high-stress applications such as pumps and motors. Grade 8.8 steel bolts are known as a structural grade, while grade 5 steel bolts are hardened and commonly used in automotive applications. These hex bolts are produced in stainless, high tensile, and mild steel and are available in different sizes and lengths.