identifier

NIIN — NATO Item Identification Number

Also known as: NATO Item Identification Number

Last nine digits of an NSN — the unique item number worldwide.

The NIIN is the last nine digits of the NSN. It uniquely identifies a single item across NATO supply systems. PartsPerk accepts NIIN, NSN, FSC, and CAGE inputs; for buyer-facing routing, the NIIN is folded back into the parent NSN doorway.

NSN lookup →

NSN — National Stock Number13-digit identifier the U.S. and NATO supply systems use to catalog every standardized item.
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.

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

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