Which rivet head style is commonly known as a universal head rivet?

The rivet head style commonly referred to as a universal head rivet is associated with the MS20470 specification. The universal head has a dome shape that provides a good balance between strength and ease of installation, making it suitable for a variety of applications in aerospace structures. This design allows for effective load distribution and is often used in structural applications.

In contrast to other rivet head styles, such as flush heads or countersunk designs, the universal head can be more easily installed in locations where accessibility is an issue, benefiting from its rounded profile. This makes it particularly useful in cases where airflow and aerodynamics are a consideration, as well as in applications where a tight fit is not as critical. Consequently, the universal head's versatile characteristics render it a preferred choice in many aviation manufacturing processes.

The other rivet head styles represented by their respective specifications serve different purposes and may be utilized in more specialized contexts.