National Stock Number
1660-00-031-3561
National Stock Number (NSN) 1660-00-031-3561, or NIIN 000313561, (mask,oxygen) was assigned October 28, 1972 in the Federal Logistics Information System (FLIS). NIIN 000313561 was cancelled on October 29, 2013, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 1660010465718. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 15751. [A DEVICE CONSISTING OF A FACEPIECE WHICH PARTIALLY COVERS THE FACE, HAVING A BREATHING TUBE AND A COUPLING FOR CONNECTING TO A REGULATED SUPPLY OF OXYGEN. THE DEVICE MAY BE OF THE REBREATHING TYPE OR OF THE DEMAND TYPE AND MAY BE USED FOR RESCUE OPERATION OR TO SUPPLY THE WEARER WITH OXYGEN WHEN FLYING AT HIGH ALTITUDES. IT MAY INCLUDE REGULATING DEVICE(S) BUT DOES NOT INCLUDE OXYGEN CYLINDER(S). EXCLUDES:MASK, ORONASAL.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1660000313561 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.