National Stock Number
1660-01-678-1742
National Stock Number (NSN) 1660-01-678-1742, or NIIN 016781742, (concentrator,oxygen,aircraft) was assigned January 24, 2019 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jun 18, 2019, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. Acquisition of this part is restricted to source(s) specified on "Source Control", "Altered Item" or "Selected Item" drawings/documents. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 52896. [AN ITEM DESIGNED TO DELIVER AN ENRICHED OXYGEN GASEOUS MIXTURE TO THE PILOT(S) TO PROTECT THEM FROM ALTITUDE, HYPOXAEMIA, CHEMICAL POLLUTIONS (SMOKES), AND ACCELERATIONS.]. This item is a Flight Safety Critical Aircraft Part (FSCAP). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1660016781742 does not contain precious metals.
This information was last updated on Aug 01, 2025.