In the context of aircraft structure, what type of bolt is known for its swaged collar?

The correct answer is a Hi-shear rivet. A Hi-shear rivet features a swaged collar that is designed to enhance its shear strength, making it particularly well-suited for applications in aircraft structures where high strength and reliability are critical.

The swaged collar acts as a secondary locking mechanism once the rivet is installed, creating a mechanical bond that can handle significant loads. This design is crucial in aviation, where components are often subjected to extreme operational stresses.

The other options, such as standard bolts, jo-bolts, and hex bolts, do not incorporate this swaged collar feature and serve different applications in structural assembly. For example, standard bolts and hex bolts are commonly used for general fastening but do not offer the same shear resistance as Hi-shear rivets. Jo-bolts are typically used in specific connections but lack the unique properties of the Hi-shear rivet. Understanding these distinctions is important for selecting the appropriate fastener for aerospace applications.