National Stock Number
4730-21-913-3658
National Stock Number (NSN) 4730-21-913-3658, or NIIN 219133658, (trap,air) has an unknown assigned date. 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 one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over a year. There have been 8 contracts issued for this part number, with 8 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPE7M025V0757, SPE7M322P2917, SPE7M422P2727, SPE7M319P2669, SPE7M315V5417. The total value of the awarded contracts has been US$ 179,098.74.
This NSN is somewhat common among different platforms, belonging to 10 different weapons systems.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 18314. [A DEVICE USED TO AUTOMATICALLY VENT AIR FROM WATER OR VENT GAS FROM ANY LIQUID IN A PIPELINE OR CLOSED VESSEL. SEE ALSO TRAP, MOISTURE.].
This information was last updated on Nov 28, 2025.