What material are structural bolts typically made from?

Structural bolts are typically made from the same materials as structural screws, which is commonly low-carbon or medium-carbon steel. This steel provides the necessary strength and durability required to withstand the demanding conditions and loads that structures are subject to. The properties of steel, such as its high tensile strength and resistance to deformation under stress, make it an ideal choice for fasteners in aviation and other structural applications.

Choosing materials like aluminum alloy, plastic composite, or carbon fiber would not be suitable for structural bolts due to their lower strength and load-bearing capabilities compared to steel. While aluminum alloy is used in various applications within the aerospace industry for its lightweight properties, it does not provide the same strength for structural bolting applications. Plastic composite materials and carbon fiber may serve well in specialized contexts but lack the necessary mechanical properties for solid structural integrity as required in aviation applications. Thus, the alignment of structural bolts with the same materials as structural screws emphasizes their essential role in maintaining safety and reliability in aircraft structures.