---
title: National Stock Number (NSN)
description: "A unique, item-identifying series of numbers that are the official label applied to an item of supply that is repeatedly procured, stocked, stored, issued, and used throughout the federal supply system. Regulatory reference: [FAR subpart 45.2](https://www.acquisition.gov/far/subpart-45.2) [ctabanner id='1640100413']"
url: "https://www.gsascheduleservices.com/kb/sam/national-stock-number-nsn/"
updated: "2022-04-13"
category: After Award / Compliance / SAM Record
tags:
  - sam
---

# National Stock Number (NSN)

A unique, item-identifying series of numbers that are the official label applied to an item of supply that is repeatedly procured, stocked, stored, issued, and used throughout the federal supply system.

Regulatory reference: [FAR subpart 45.2](https://www.acquisition.gov/far/subpart-45.2)

 [ctabanner id='1640100413']