A490 Structural Bolts

An A490 structural bolt is a type of high-strength, heavy hexagonal bolt designed for use in structural and construction applications. These bolts conform to the ASTM A490 standard, which sets specific requirements for their material composition, mechanical properties, and performance. Key characteristics of A490 structural bolts include: High Strength: A490 bolts are made from alloy steel and are heat-treated to achieve high tensile strength, typically in the range of 150,000 to 173,000 psi. Weathering Resistance: They are often provided with a weathering steel finish or coating to enhance their resistance to atmospheric corrosion, making them suitable for outdoor applications. Heavy Hex Head: A490 bolts have a heavy hexagonal head, which provides a larger bearing surface and facilitates proper tightening. Tension Control: Some A490 bolts may be tension control bolts, designed to be installed with specialized equipment that ensures consistent and controlled tension. Structural Use: These bolts are primarily used in structural steel connections, such as in the construction of buildings, bridges, and other critical structures. A490 structural bolts are designed to provide a reliable and secure connection in high-stress structural applications, where the safety and integrity of the structure are paramount. They are subject to rigorous testing and quality control to ensure they meet the required standards and performance specifications.