Classification of fasteners based on fastening methods

We can classify two types of fasteners based on their installation:

  1. Removable fasteners - Those fasteners, which can be removed without the permanent damage or failure of either the fastened parts, or of the fastener, we call removable ones.

    They may be further installed after special and appropriate inspections.
  2. Permanent fasteners - Those fasteners, which's either part is damages or fails during the dis-assembly, we call permanent ones.

    Some of the parts of the specific types (which have more parts) may be reused if they were not damaged during the dis-assembly.