Which parts are typically shown in full outline without sectioning?

The correct choice highlights that rivets and bolts are typically represented in full outline without sectioning in technical drawings and schematics. This approach allows for clarity and effective communication of the fastening elements' size, shape, and positioning within an assembly.

Using full outline representation makes it easier for engineers and technicians to quickly identify these components during design reviews, fabrication, and assembly processes. The full outline provides a clear, unambiguous view that emphasizes how these fasteners interact with other components.

In contrast, other options such as manufacturing tools, outer dimensions, and assembly processes may still involve details that require dimensional or sectional views for full understanding. These aspects often require additional clarity on how they function or fit together, which can necessitate different methods of representation beyond just outlining. Thus, representing rivets and bolts in this way serves a practical purpose in the context of aerospace materials and hardware.