The Government uses National Stock Number's (NSN) which contain sub-groups that identify the Federal Supply Groups (FSG) , Federal Supply Classes (FSC), Nato Country Code, National Item Identification Number NIIN) and the
serial number of the product.
The National Stock Number is a 13-digit number.
Federal Supply Group (FSG): Positions 1-2 (62)
Federal Supply Class (FSC): Positions 1-4 (6240)
Nato Country Code : Positions 5-6 (00)
National Item Identification Number (NIIN): Positions 5-13 (000272059)
Serial Number: Positions 7-13 (0272059)
Federal Supply Group (FSG)
is identify by the first two
digits. The broad category
in which the item belongs.
National Item Identification Number (NIIN) is the last 9 positions and
identify the specific item.
The first two positions of the NIIN identify the NATO country code for the
country making the number assignment.
The last seven digits of the NIIN are the item serial number.
The serial number does not follow an assignment pattern. it is merely a number for the item.
A National Item Identification Number (NIIN) is a nine-digit code that
identifies each item of supply. A National Stock Number (NSN) is a 13-digit
number consisting of the four-digit Federal Supply Class (FSC) and the
Sites to help Find an NSN number Descriptions
Defense logistics Information
Services (FLIS) currently contains about 14 million active and inactive U.S. National stock numbers.
NSNs Available through WebFLIS:
WebFLIS Has a Public Query and a Restricted / Sign-on version.
Display pictures for associated NSNs.
These are representative pictures only of the item of supply. As
they are a generic representation, they may not look exactly
like the item of production the user may receive in response to
If an NSN has a picture available, it will be displayed on the
WebFLIS NIIN Output Data screen in a "thumbnail" picture.
The user may click on the picture for an enlarged version of the
For more detailed information, please refer to the Frequently
Asked Questions section on the
WebFLIS Home Page.
National Stock Number extract includes the current listing of National Stock Numbers (NSNs), NSN item name and
descriptions, and current selling price of each product listed
in GSA Advantage and managed by GSA for use by the general
This list contains only stocked items in the GSA
Supply Chain and does not list nonstocked items.
Each NSN is
listed with the vendors description of the item.
descriptions exceed the standard length and are truncated.
DLA Logistics Information Support NSNs.