A490 is a representative popular product our company produces routinely. It is one kind of high strength structural bolts complying with ASTM standard. A490 bolt is designed for steel-to-steel structural connections, for example, shear connection, axial tensile connection and carrying connection. Usually the head on it would be larger. And it could survive successfully in more intense and harsh conditions. Treated for strength, A490 bolts should go through rigorous testing to ensure properties are at their peak. This includes tensile strength, yield KSI and more indicates.