How many main parts do semi-permanent fasteners have?

Semi-permanent fasteners are designed to provide a strong connection that can be easily disassembled without damaging the components being joined. Typically, semi-permanent fasteners consist of three main parts: the fastener body, a threaded insert (which can be a nut, for example), and a locking device, such as a washer or a locknut.

The fastener body is the primary element that connects the two components, while the threaded insert provides the necessary grip and strength through its threads. The locking device ensures that the connection remains secure and prevents loosening due to vibrations or other forces during operation.

This three-part structure facilitates effective load transfer between components while still allowing for maintenance and adjustments when necessary, distinguishing it from other types of fasteners that may employ fewer or additional components.