How many digits are in a standard stock number?

A standard stock number, commonly referred to as a National Stock Number (NSN), consists of 13 digits. This twelve-digit identifier is crucial for managing inventory, procurement, and logistics within the military and other governmental agencies. The format comprises two sections: the first segment includes a four-digit Federal Supply Classification (FSC), which categorizes the item by its function or use. This is followed by a nine-digit item identification number that uniquely identifies each specific item within that category.

Understanding that the NSN is composed of exactly 13 digits is fundamental for anyone involved in logistics and inventory management, as it plays a key role in ensuring that items can be accurately identified, ordered, and tracked throughout the supply chain.