National Item Identification Numbers (NIIN) Lookup

NIIN numbers refer to the National Item Identification Number. This denotes the last 9 digits of the National Stock Number or NSN. The NIIN alone uniquely identifies the item. The first two digits of the NIIN identify the National Codification Bureau (NCB), while the other 7 characters are a non significant serial number. If you are in search of quality NIIN numbers like 0, 000012134, 000012133, 000012125, 000012124, trust in the folks at Unlimited NSN. Our team is one of the leading parts distributors of aircraft, aeronautical, and military parts in the aviation aftermarket. Whatever part you are seeking, our team of aviation parts suppliers either already has it stocked or can acquire it in as little time as possible. We’ve partnered with more than 2000 manufacturers, which is how we’ve been able to accomplish such high turnaround times. 

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