What should high tensile bolts be marked with?

High tensile bolts are typically marked with the manufacturer's designation and the strength rating to ensure proper identification and to provide essential information regarding the bolt's specifications. This marking is crucial because it verifies that the bolt meets the necessary mechanical properties for its intended application, helping operators and safety personnel make informed decisions about their strength and suitability for specific loads.

The manufacturer's designation indicates the producer of the bolt, allowing users to trace the origin of the component in the case of quality assurance or failure analysis. The strength rating provides a quantifiable measure of the bolt’s tensile strength, which is critical for ensuring that it can withstand the forces it will encounter in use. This information is essential for maintaining safety standards and adherence to engineering specifications in construction and lifting operations.

Marking high tensile bolts solely with weight capacity, installation date, or warranty information does not provide the necessary clarity regarding the bolt’s material integrity and load-bearing capabilities, which are essential for safe operations in crane usage.