ASTM A193 Grade B7 Stud Bolts are high-strength alloy steel fasteners manufactured from chromium-molybdenum (Cr-Mo) alloy steel (typically AISI 4140/4142) and heat-treated by quenching and tempering to achieve exceptional tensile strength, durability, and resistance to elevated temperatures. These fully threaded stud bolts are widely used with ASTM A194 Grade 2H Heavy Hex Nuts for securing flanged joints in pressure vessels, pipelines, valves, he ... Continue