What is the meaning of long-lead item?

A long-lead item refers to a component or material that requires a significant amount of time to manufacture or procure before it can be delivered or utilized in a project. These items are often critical to the project timeline and can affect overall scheduling if delays occur. Proper planning and early ordering of long-lead items are essential to ensure that projects stay on track and meet deadlines. Examples include specialized machinery, custom-built materials, or specific technology components.