What are the parts of a jo-bolt?

The parts of a jo-bolt consist of an aluminum or steel nut, a threaded steel bolt, and a corrosion-resistant steel sleeve. This configuration provides the necessary strength and durability required for various structural applications in aviation. The threaded steel bolt is key for achieving the proper clamp load during installation, ensuring that the joint remains secure under operational loads.

The aluminum or steel nut serves as the fastening component that mates with the bolt, while the corrosion-resistant steel sleeve protects the main bolt against environmental factors that could lead to corrosion, which is particularly important in the aviation industry where exposure to moisture and chemicals is common. This combination of materials and components is designed to ensure reliability and longevity, critical in maintaining the structural integrity of aircraft.

In contrast, the other options list incorrect components or material combinations that do not accurately represent the parts of a jo-bolt. For instance, the use of copper or nylon does not offer the same structural advantages needed in aviation applications, which require specific materials for performance and safety standards.