What fastener consists of a cadium plated steel alloy stud and an anodized aluminum collar?

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

Answer: (A)

The correct choice is the Hi-shear rivet. A Hi-shear rivet is designed specifically for high-strength applications in aircraft structures due to its unique construction, consisting of a steel alloy stud and an anodized aluminum collar. This combination allows for effective load distribution while taking advantage of the properties of both materials. The cadmium plating on the steel stud offers corrosion resistance, which is crucial in aviation environments where exposure to various elements can lead to degradation.

In contrast, other fasteners listed have different constructions and applications. Jo-bolts and Hi-lok fasteners have distinctive designs that do not match the specific description in the question. Solid shank rivets are typically made from a single piece of metal and do not have the dual-material configuration with a collar mentioned. Therefore, the combination of materials and the intended use in high-stress conditions in aviation uniquely identify the Hi-shear rivet as the correct answer.