What is the maximum allowable clinch diameter when inspecting the clinch diameter of a driven head rivet?

The maximum allowable clinch diameter when inspecting the clinch diameter of a driven head rivet is determined by the Go end of the Go/NoGo gauge diameter. This is vital in ensuring that the rivet has been installed correctly and meets engineering specifications.

In aerospace assembly, rivets play a critical role in the structural integrity of components. The Go/NoGo gauge provides a standardized method for checking the dimensions of these rivets. The Go end indicates the maximum dimension that is acceptable; if the rivet's clinch diameter exceeds this size, it may not fit properly in the intended application, potentially compromising the joint's strength and safety.

Using the Go end as a reference ensures that the rivet meets the specified criteria for installation and retains adequate performance under load. Properly using this gauge helps maintain quality control in manufacturing processes where tolerances are critical, such as in aerospace applications. This practice is essential as it contributes to the overall reliability and safety of aircraft structures.