Understanding the 13-Digit NSN Code Structure
A 13-digit NSN code is organized into two main parts that identify the product category and the country of origin:
Structure Formula: FSC (4 digits) + NCB (2 digits) + Item Number (7 digits) Note: NCB (2 digits) + Item Number (7 digits) together form the 9-digit NIIN.
Segment Details
Segment | Code Name | Description | Example |
First 4 Digits | Federal Supply Classification (FSC) | Groups items into broad industry categories. | 8030 for Aircraft Sealants and Adhesives, or 1560 for Airframe Hardware. |
Next 9 Digits | National Item Identification Number (NIIN) | Uniquely pinpoints the exact physical component. | - |
First 2 Digits of NIIN | National Codification Bureau (NCB) | Identifies the nation that assigned the number. | 01 for the United States, or 99 for the United Kingdom. |
Final 7 Digits | Item Number | Isolates the specific physical item within that nation's registry. | - |
Official vs. Commercial Sourcing Databases
Depending on your security clearance, contract requirements, and urgency, you can search and cross-reference parts across different trusted platforms:
Official Government Engines (DLA WebFLIS): Managed directly by the Defense Logistics Agency, WebFLIS serves as the primary federal database to look up National Stock Numbers, technical specifications, and matching Commercial and Government Entity (CAGE) codes.
Commercial Aerospace Distributors (Purchasing Efficiency): Platforms like Purchasing Efficiency offer streamlined search tools, rapid RFQ turnarounds, strict anti-counterfeiting policies, and personal account management to help you source hard-to-find components without delay.
Key Industries and Applications Served
Commercial and General Aviation: Airframe structural components, avionics suites, and engine replacement spares.
Defense and Tactical Logistics: MIL-SPEC hardware engineered for military aircraft, armored ground vehicles, and naval ships.
AOG and Emergency Support: Priority handling and fast-track shipping for Aircraft On Ground (AOG) situations and hard-to-find obsolete parts.
Why Choose Purchasing Efficiency?
Certified Quality Assurance: Every component undergoes rigorous visual and physical inspections. We proudly maintain AS9120B, ISO 9001:2015, and FAA AC 0056B accreditations to guarantee authenticity and full traceability.
Ethical Sourcing Network: We partner exclusively with audited defense contractors, authorized distributors, and fully vetted aerospace suppliers.
Dedicated Account Managers: Get personal support for export compliance, documentation, ITAR regulations, and order updates from quote to delivery.
Fast RFQ Responses: Minimizing aircraft downtime is essential. Submit your NSN, NIIN, or CAGE code to receive a competitive quote in record time.
Frequently Asked Questions (FAQs)
How do I find a part number from an NSN?
You can find a part number by entering the 13-digit NSN into our search tool or official databases like DLA WebFLIS. The system will cross-reference the number and display matching OEM part numbers, CAGE codes, and item specifications.
What is the difference between an NSN and a NIIN?
An NSN is a complete 13-digit identification code, while a NIIN consists of the last 9 digits of that same number. The NIIN specifically identifies the individual item, whereas the first 4 digits of the NSN classify the broader product group.
How do I look up a CAGE code with an NSN?
Submit your 13-digit NSN into the Purchasing Efficiency search engine or request a quote directly. Our team will retrieve the associated CAGE code to confirm the manufacturer's identity and verify part compliance.
