A "detail drawing" is a drawing of a single component, assembly of multiple parts, or an entire system of assemblies. A detail drawing provides complete and precise descriptions of a part's dimensions, shape and how it is manufactured.

Detailed drawings play a crucial role in defining the scope of work in construction projects. They provide a visual representation of the intended design and help ensure that all parties involved in the project have a clear understanding of the project's goals.

Detail drawings may be used to demonstrate compliance with regulations and other requirements, to provide information about assembly and the junctions between components, to show construction details, detailed form, and so on, that would not be possible to include on more general drawings.