In metalworking, OD typically signifies “Outside Diameter.” It refers to the measurement of the distance from one external edge of a circular object, such as a pipe, tube, or rod, to the opposite external edge. For example, a metal tube described as having a specific OD indicates the dimension across its outer surface.
Understanding and accurately specifying the external dimension is crucial for ensuring proper fit and functionality in various metalworking applications. This measurement is fundamental in design, manufacturing, and quality control processes. Historically, precise dimensional control has been essential for interchangeable parts and reliable performance of metal components in machinery and structures.
