Which components are typically not cross-hatched in technical drawings?

In technical drawings, cross-hatching is used to differentiate between different materials and to indicate cut surfaces. It is typically applied to components that have a complex geometry or where clarity is needed to represent how parts interact or are assembled.

Axles and webs, which are generally solid components that may not require additional emphasis to identify their material or structural details, are commonly represented without cross-hatching. They are usually understood as singular pieces providing structural integrity, so using cross-hatching may not add relevant information in these cases.

On the other hand, components like gears, bolts, screws, nuts, plates, and sheets often do require cross-hatching to show their composition or the different materials in use, particularly when depicting detailed assemblies or interactions. This helps in understanding the overall function and design intent. Hence, the exclusion of cross-hatching on axles and webs aligns with standard practice in technical drawing representation.