Who is responsible for assigning a National Stock Number (NSN)?

The Defense Logistics Information Service (DLIS) is the correct answer because it serves as the central authority for the management of National Stock Numbers (NSNs). The DLIS is responsible for the entire process involved in the assignment and maintenance of NSNs, which includes establishing unique identifiers for items that the military uses. This ensures that logistics functions can effectively identify and manage various supplies, reducing confusion and enhancing inventory management.

The function of assigning NSNs is specifically part of the DLIS's role in supply chain management, which involves cataloging items and ensuring they are correctly classified for use across different branches of the military. Other entities like the Department of Defense (DoD) and the Navy Supply Command play important roles in logistics and supply chain operations, but they do not directly assign NSNs. The Government Logistics Agency is also involved in logistical support but does not specifically handle NSN assignment either. Therefore, DLIS is the authoritative body designated for this critical task.