![]() Blind bolts are tightened into a pre-positioned collar which expands inside the hole and locks the assembly into position. In the case of blind rivets, the rivet’s head plastically deforms to provide a sturdy hold. The fastener is inserted into the hole and tightened. Also, this is the reason for the ‘blind’ in their name. Thus, in aircraft, they are commonly found in hard-to-reach places. Thus, engineers have come up with various innovative designs to deal with such applications.īlind bolts and blind rivets are incredibly useful when one side of the joint is inaccessible. They provide a strong grip and are a relatively cheap option among aerospace fasteners.Īircraft fasteners have highly specialized applications and standard designs do not cut it in many cases. They are most commonly used in joining the metal sheets that make up an aircraft’s body. They come in various head designs like roundheads, truss heads, countersunk, etc.Īircraft rivets are pin-like structures that are plastically deformed from one end to create a permanent joint. ![]() Machine screws are also useful in aircraft assembly. Structural screws have similar tensile and shear strength as bolts and are ideal for heavy-duty applications. Several categories of screws are used in aircraft assembly, with different materials, coatings, screw heads, and designs. They also have external threads like bolts but the threads are pointier with a ridge-like shape and a higher helix. Screws are the most abundant fasteners in aerospace structures. Their material properties need to be at par with their mating components.įurthermore, they also include features such as self-locking and sealing that are integral for aerospace structures that experience a lot of vibrations mid-flight. In the aerospace industry, they are generally made from high-strength steel or aluminum alloys coated with corrosion-resistant materials.Īircraft nuts are the female mating parts for bolts or screws. They provide excellent fastening strength and resistance against dynamic loading. ![]() We will touch upon them before moving on to special fasteners specific to the aerospace industry.Īircraft bolts are externally threaded fasteners used for non-permanent joints. Some aircraft fasteners types work in the same way as the general purpose fasteners we use in our daily lives.
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