Award & contract administrationIdentification system

NSN

National Stock Number

Definition

A National Stock Number is a 13-digit identifier assigned to items in the federal supply system, enabling standardized identification, cataloging, and procurement across all government agencies. NSNs facilitate logistics interoperability and supply chain management.

NSN assignment is required for items entering the federal supply system. Understanding NSN structures helps contractors navigate federal cataloging requirements. NSN usage supports automated logistics systems and standardized procurement processes.

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