What type of assembly can a threaded fastener create?

• A. Temporary
• B. Absolute
• C. Flexible
• D. Semi-permanent

Answer: (D)

Threaded fasteners create joints that are designed to be taken apart after service. A bolt and nut clamp components together with a controlled, repeatable clamping force, and when maintenance is needed you can loosen the fastener with the proper tool, separate the parts, perform the service, and then reassemble. This ability to be disassembled and reused places such joints in the semi-permanent category. They’re not meant to come apart as quickly or easily as a truly temporary connection, and they aren’t meant to be permanently fused or highly flexible; instead they provide reliable strength with the option of disassembly when required.