Which fastener type is known for combining features of both a rivet and a bolt?

• A. Hi-shear rivet
• B. Jo-bolt
• C. Hi-lok fasteners
• D. Solid shank rivet

Answer: (C)

The Hi-lok fastener is recognized for combining features of both a rivet and a bolt, which makes it particularly useful in aviation applications. This type of fastener has a unique design that allows it to provide high strength and resistance to shear loads, similar to a bolt, while also offering the advantages of a rivet, such as being lightweight and more resistant to loosening from vibration.

The design of Hi-lok fasteners includes a threaded shaft and a collar that secures it in place, similar to how a bolt functions, allowing for easy installation and removal. This capability is beneficial for maintenance and repair work on aircraft structures, where components often need to be replaced or adjusted.

In contrast, other types of fasteners mentioned do not exhibit this combination of features. For example, the Hi-shear rivet is primarily focused on shear strength but lacks the bolt's threaded feature for easy removal. The Jo-bolt is less commonly recognized in traditional aviation applications compared to Hi-lok fasteners, and a solid shank rivet does not incorporate the removal abilities that a bolt offers. Hence, Hi-lok fasteners stand out for their unique advancement in fastener technology, making them the correct answer in this scenario.