Is a 10.9 bolt stronger than Grade 8 ?

When it comes to fasteners, bolts are an essential component. It's important to select the right bolt for the specific application to ensure proper strength and durability. In this article, we will compare the 10.9 bolt and the Grade 8 bolt to determine which one is stronger.

The 10.9 bolt is a metric bolt commonly used in automotive and machinery applications. It has an ultimate tensile strength of 1000 MPa and a yield strength of 90% of its ultimate tensile strength. This means that the 10.9 bolt can withstand a maximum tensile load of 1000 MPa before it breaks and can be used for applications where a strong and durable fastener is required.

On the other hand, the Grade 8 bolt is an imperial bolt widely used in North America. It has a tensile strength of 150,000 psi and a yield strength of 130,000 psi. This means that the Grade 8 bolt is significantly stronger than the 10.9 bolt and can be used for applications where a strong and durable fastener is required.

It's important to note that while the Grade 8 bolt is stronger than the 10.9 bolt, it may not be suitable for all applications. The strength and suitability of a bolt depend on the specific requirements of the application.

In conclusion, while the Grade 8 bolt is stronger than the 10.9 bolt, it's important to consider the specific requirements of the application when selecting a fastener. Both bolts have their own advantages and disadvantages, and the right choice will depend on the specific needs of the project.