What do the first four digits of an NSN represent?

The first four digits of a National Stock Number (NSN) represent the Federal Supply Classification (FSC) code. This code is vital for the categorization of items in the federal supply system and is used to identify the functional areas of items with common characteristics. The FSC aids in organizing and managing inventories efficiently by dividing items into distinct classes based on their attributes, such as use and material composition.

Understanding the significance of the FSC is crucial for logistics personnel, as it helps in various responsibilities like inventory management, procurement, and supply chain operations. By knowing the FSC, a logistics specialist can quickly locate and processes requisitions for specific types of supplies efficiently, ensuring that the right items are available when needed.