What is the tensile strength for an SAE grade 1 or 2 bolt?

The tensile strength of an SAE grade 1 or 2 bolt is indeed 64 KSI (kilopounds per square inch). This classification indicates that both grade 1 and grade 2 bolts are designed for general use and have sufficient tensile strength for many standard applications. These bolts are typically made from carbon steel and are heat-treated to enhance their strength properties.

The tensile strength is an essential parameter, as it indicates how much force a bolt can withstand in tension before breaking. For grade 1 and 2, the 64 KSI rating ensures that they are suitable for moderate strength applications, making them a common choice in both automotive and construction settings. This tensile strength helps users to select the appropriate fastener for their specific applications, ensuring safety and reliability in assembly.