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National Stock Numbers

Please note:

  • Contractors are not awarded NSNs with their Schedule contract
  • With the exception of AbilityOne products, NSNs are not to be listed on GSA Advantage.  

When uploading your electronic catalog to GSA Advantage, please leave the NSN field “blank”. Be advised that you will be asked to remove self-provided NSN references from your product descriptions.
For a complete list of authorized vendors who can distribute AbilityOne Program products to federal customers, and therefore can list NSNs on their product descriptions, visit the AbilityOne Independent Distributors page.


Some consultants may offer a service that claims to match your item with an NSN by cross referencing an NSN database with MAS product descriptions. This is a prohibited practice. NSNs are only assigned after a GSA Contracting Officer (CO) or engineer examines technical information submitted by the contractor and confirms that the product matches predetermined requirements.

If you have any questions about NSNs and your Schedule contract, please contact your CO.