(a)
NPR 6000.1, "Requirements for Packaging, Handling, and Transportation for Aeronautical and Space Systems, Equipment, and Associated Components" provides guidance for shipment of certain NASA items.
(b) Contracting officers, with the advice of the requiring activity and the Center Transportation Officer, must include a designation of each deliverable item, or groupings of deliverable items, as Class I, II, III, or IV for the purposes of contractor compliance with the NPR.