As defense logistics and military supply chains are wide-spanning and highly regulated, having the ability to accurately identify, source, and procure parts is essential. To support this need, the United States and NATO member nations have long relied on National Stock Numbers (NSNs), which are numerical identifiers that standardize the classification and tracking of parts across military and government inventories. Despite this convenient system, navigating the actual process of locating and acquiring NSN-designated items can still present challenges due to the complexity of military requirements and supplier variability. Fortunately, NSN lookup tools are designed to simplify this task, and this guide will cover every major step in performing an NSN search for military equipment.&...