identifier

NSN — National Stock Number

Also known as: NATO Stock Number · national stock number

13-digit identifier the U.S. and NATO supply systems use to catalog every standardized item.

A National Stock Number (NSN) is a 13-digit identifier the U.S. and NATO supply systems use to catalog every standardized item — from O-rings to engine modules. The first four digits are the FSC (Federal Supply Class), the next two are the country code, and the last seven are the NIIN (NATO Item Identification Number). PartsPerk accepts NSN, NIIN, FSC, and CAGE inputs and routes each to the canonical doorway.

NSN lookup →

NIIN — NATO Item Identification NumberLast nine digits of an NSN — the unique item number worldwide.
FSC — Federal Supply ClassFirst four digits of an NSN — the federal supply category.
CAGE — Commercial and Government Entity codeFive-character code identifying a supplier or contractor.
ATA 106 — Spec 2000 Chapter 11Trace pack standard for used-serviceable, surplus, or parts-out aviation material.

Canonical URL: https://partsperk.com/glossary/nsn · Glossary entries are buyer-language definitions; not regulatory or engineering advice.

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