Work Package
ASME Y14.24 : Types and Applications of Engineering Drawings
A group of related items that do not make up a complete assembly, with instructions for installing the items in a major assembly structure (e.g., a power supply and mounting hardware with instructions for installing them in a telecommunications satellite structure).
See Also:
Item, Assembly
Alternate Definitions:

DAU - Natural subdivision of a control account. A work package is simply a task/activity or grouping of work and is the point at which work is planned, progress is measured, and earned value is computed. It can be translated into different terms in different companies and functions. It can be a design job, a tool design package, a build-to-package, a shop order, a part number, a purchase order, or any other definable task/activity at whatever level of control is normal for program management within the company.