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NSN Lookup

National Stock Numbers or NSNs, are 13-digit serial numbers assigned to all standardized items within the  federal supply chain. Also known as NATO stock numbers, NSNs are recognized by all NATO countries. NSNs are assigned by the DLA and are typically in the format XXXX-XX-XXXXXXX.

The NSN can be further broken down into smaller subcategories, each providing individual information about the component. To begin, the first four digits of the NSN are known as the Federal Supply Classification Group. The FSCG determines which of the 645 subclasses an item belongs to. The FSCG is further split into the Federal Supply Group (FSG) and the Federal Supply Classification (FSC). The FSG is made up of the first two digits of the NSN which determines which of the 78 groups an item belongs to. The second 2 digits make up the FSC, which determines the subclass an item belongs to. In the aerospace industry a key federal supply group is FSG 15: Aircraft and Airframe Structural Components. The remaining 9 digits are made up of the 2-digit country identifier followed by the 7 National Item Identification Number (NIIN). The US for example,  has the country identifier, 00.


At ASAP Distribution, owned and operated by ASAP Semiconductor, we stock over 2 billion NSNs Parts. We implemented a user-friendly search engine to make your NSN Lookup as simple as possible. We are an FAA AC-0056B accredited and ISO 9001:2015 certified company. Our customers trust us to source and ship premium NSNs from quality manufacturers.


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