National Stock Numbers (NSNs) are standardized 13-digit identifiers assigned by defense and government codification authorities to catalog and track material items across various global supply chains. Originally developed for military logistics, NSNs are now widely used across diverse purchasing systems to reduce ambiguity, ensure part compatibility, and support traceability throughout a product’s lifecycle. In this blog, we will explore the strategic value of NSNs, common use cases in procurement, and best practices for identifying trusted distributors and making sourcing decisions with confidence.
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