What does 10.9 mean on a bolt?

As high-strength parts, Property Class 10.9 bolts and screws are often used in engineering and construction projects where strength and durability are paramount. They can be found in bridges, buildings, and other structures that require robust fastening solutions.

The Property Class 10.9 head marking signifies a specific standard of quality and strength for bolts and screws. These fasteners are designed to meet rigorous requirements in various industries and applications.

In addition to their strength, Property Class 10.9 bolts and screws are also known for their precision and reliability. They are manufactured to tight tolerances to ensure consistent performance and long-lasting durability.

For all sizes of Property Class 10.9 bolts and screws, the minimum tensile strength is specified as 1040 MPa. This ensures that they can withstand significant forces without breaking or failing.

The tensile strength of Property Class 10.9 bolts exceeds the nominal value indicated in the class designation. This margin of strength provides an additional level of reliability and safety in critical applications.