Allied Encyclopedia: What Are NSN Numbers?

Allied EncyclopediaWhat is an NSN number? NSN stands for National Stock Number. It is an official, standardized number applied to a specific item that goes through the federal supply system repeatedly.

These numbers are crucial to military logistics supply chains. They are used to standardize and streamline product identification and inventory management.

NSNs eliminate confusion concerning which items are in stock and which items are suitable replacements for products no longer on hand. They also save time by providing quick and easy information that can be used when ordering supplies, maintaining budgets, and performing the general maintenance of billions of dollars of inventory.

The NSN is a 13 digit code, unique to the item it identifies. Each set of digits represents an important piece of information about the product. The first four digits represent the item’s supply class. Similar items are grouped together using this part of the code. For example, NSNs for comparable electrical wire and cable parts would all begin with the same four numbers: 6145. The next two digits indicate the country of origin, or which country requested the NSN assignment. Finally, the last seven digits are unique, specifying the individual product.

Example NSN Number: 6145-00-003-4169

  • 6145 = Federal Supply Classification Group (FSCG): wire and cable, electrical
  • 00 = Country of origin: USA
  • 003-4169 = Item number: MIL-C-27500-22CB3T10 cable

*The last 9 digits of an NSN number, 00-003-4169 are also referred to as the National Item Identification Number (NIIN)

Beyond the information found just by looking at the digits of the NSN itself, even more data can be found in the Federal Logistics Information System (FLIS). When an item is assigned a NSN number, all known data concerning that product is gathered to be entered into the central database. This includes item name, manufacturer part number, pricing and shipping information, physical and performance characteristics, shelf life, and even how to dispose of the item once it is no longer needed.

So who uses NSNs? The U.S. government along with federal agencies such as the Department of Defense, countries belonging to NATO, and other governments around the world all recognize NSNs. One of these groups must establish the need for such a number before Defense Logistics Information Services (DLIS) begins to catalog information and eventually assign a unique NSN.

As you can see, NSNs play an important role in supply management for both the government and the military. Through the NSN system, the DLIS is able to simplify an otherwise complicated inventory management process into a much more manageable task.

At Allied Wire & Cable, we can quote by NSN number and have a large stock of NSN materials in our more than $30 million inventory of wire and cable products. Request a quote now.

About awcwire
Allied Wire & Cable is a value-added manufacturer and distributor of electrical wire and cable, tubing, and more. We are a family owned and operated company, serving a wide range of industries, including the military, automotive, aerospace, and telecommunications markets. Allied is headquartered in Collegeville, PA. Additional locations can be found across the US, in Merrimack, NH, Tampa, FL, Pewaukee, WI, and Las Vegas, NV. For more information on Allied, visit our main website at

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