What is the primary purpose of the blades in the Go/NoGo gauge?

The primary purpose of the blades in a Go/NoGo gauge is to inspect clinch thickness. These gauges are precision tools used in aerospace to ensure that components meet specific design tolerances and specifications. The "Go" blade indicates the maximum allowable clinch thickness for a given assembly, while the "NoGo" blade ensures that the clinch does not exceed the specified limit.

Using a Go/NoGo gauge for measuring clinch thickness is vital in maintaining the integrity and safety of aerospace assemblies. Clinch connections must be correctly formed to ensure structural integrity; if they are too thick or too thin, it could lead to failure in the assembly during operation. This focus on ensuring proper thickness reflects industry standards aimed at achieving safety and reliability in aerospace applications.

Options that deal with measuring fasteners, determining weight, or assessing color coding do not pertain to the specific function of Go/NoGo gauges, which are exclusively designed for checking the dimensions of components to guarantee they conform to engineering specifications.