Welcome to the official NIIN parts procurement directory at Maintenance Parts Pro. A National Item Identification Number (NIIN) is a 9-digit numeric code that uniquely identifies an item within the Federal Logistics Information System (FLIS) and National Stock Number (NSN) inventory catalogs. Whether you need a full NIIN list, want to execute an army NIIN search, or perform a quick NIIN lookup by part number, our database gives aerospace buyers, military logistics officers, and defense contractors real-time stock access with complete traceability.
Verified NIIN Parts Directory & Cross-Reference Catalog
Use our dynamic database to cross-reference military catalog listings, match part number to NIIN, and verify National Stock Numbers. All components sourced through our platform comply with AS9120B, ISO 9001:2015, and FAA AC 00-56B standards.
NIIN Identifier | Mapped Part Number | Federal Supply Class (FSC) | Primary Application / Category | Stock Status |
00-123-4567 | AN3-5A | FSC 5305 (Screws) | Aircraft Airframe Fasteners | Available |
01-234-5678 | MS24665-132 | FSC 5315 (Pins) | Mechanical Cotter Pins | In Stock |
Understanding NIIN Meaning & Logistics Cataloging
To properly navigate federal supply catalogs, understanding the NIIN meaning is key:
What is a NIIN Number? A NIIN (National Item Identification Number) consists of the last 9 digits of a 13-digit National Stock Number (NSN).
NIIN Structure: The first 2 digits represent the National Codification Bureau (NCB) code indicating the country of origin (e.g., 00 or 01 for the United States), followed by a 7-digit item number.
NIIN vs. NSN: While an NSN includes a 4-digit Federal Supply Class (FSC) prefix, the 9-digit NIIN remains permanently assigned to a specific item regardless of classification changes.
Why Use Maintenance Parts Pro for Your NIIN Number Lookup
Fast 15-Minute RFQ Turnaround: Submit any NIIN query or part number request to receive an itemized, competitive quote within 15 minutes, 24/7/365.
Defense & Export Compliance: Every component in our NIIN parts catalogue complies with FAR/DFARS flow-down requirements, ITAR, and U.S. export control regulations.
No-China Sourcing Pledge: We guarantee 100% material authenticity, complete lot traceability, and manufacturer Certificates of Conformance (CoC) on all orders.
How to Conduct an Army NIIN Search & Request a Quote
Run a NIIN Lookup: Enter your target 9-digit NIIN code or perform a NIIN lookup by part number using our search bar.
Click Instant RFQ: Access our fast quote form directly from any verified NIIN listing.
Submit Order Details: Include your required quantity, target delivery date, and delivery location to connect directly with a dedicated defense procurement specialist.
Frequently Asked Questions (FAQs)
What is the difference between an NSN and a NIIN number?
An NSN National Stock Number is a 13-digit identifier, whereas a NIIN (National Item Identification Number) is the 9-digit suffix within that NSN. The NIIN specifically identifies the individual item, while the first 4 digits of the NSN designate its Federal Supply Class (FSC).
How do I perform a NIIN lookup by part number?
You can execute a NIIN lookup by part number on Maintenance Parts Pro by entering the manufacturer's part number into our search tool. Our cross-referencing system automatically links the part number to its assigned 9-digit NIIN and complete federal cataloging data.
Can I search for Army and military-specific NIINs?
Yes. Our global inventory database includes comprehensive Army NIIN search capabilities, enabling buyers to locate Mil-Spec hardware, defense electronics, and ground support equipment cataloged across military supply chains.
