Which tool is used to perform fastener gap inspection?

The tool best suited for performing fastener gap inspection is shim stock. Shim stock is a thin sheet of material that can be used to check the gap between fasteners and surfaces. It allows the user to accurately determine whether the gap is within acceptable tolerances by sliding the shim into the space and assessing how well it fits. If the shim fits too tightly or does not fit at all, it indicates that the gap is not in the desired range.

Using shim stock is particularly effective because it provides a tangible measure of the gap without necessitating complex measurements that other tools may require. This makes it a practical and efficient choice for inspecting fastener gaps in various assembly applications. In contrast, tools like calipers and micrometers are more suited for precise measurement of dimensions rather than gap inspections. A torque wrench, on the other hand, is primarily used for applying and measuring the amount of torque to a fastener, rather than assessing the gap itself.