NCCER Millwright Practice Exam

In what scenario would you most likely choose to use cap screws?

1. For applications requiring frequent disassembly

2. For aesthetic finishes

3. For permanent fastening

4. For high-stress assemblies

The correct answer is: For applications requiring frequent disassembly

Cap screws are typically chosen for applications that require reliable fastening while also allowing for ease of disassembly when necessary. They feature a head that is designed to accept a wrench for tightening and loosening, making them ideal for situations where components must be frequently accessed or serviced. This reflects their versatility, as they can be reused multiple times without significant wear to the threads, depending on the material used. In contrast, situations that require permanent fastening or those that involve aesthetic considerations would not find cap screws to be the best choice. Permanent fastening applications often utilize methods that do not allow for later disassembly, which is contrary to the purpose of cap screws. Furthermore, although cap screws can be used in high-stress assemblies, they might not always be the optimal choice compared to specialized fasteners designed specifically for such applications. Thus, utilizing them primarily for applications demanding frequent disassembly highlights their practicality and efficiency in a millwright's toolkit.