National Stock Number
4310-21-921-1637
National Stock Number (NSN) 4310-21-921-1637, or NIIN 219211637, (diaphragm,pump,special shaped) has an unknown assigned date. 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, there are no suppliers that are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Jul 14, 2011. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPM7M311M5742. The total value of the awarded contracts has been US$ 763.38.
This NSN is fairly common among different weapons systems, belonging to 13 different platforms.
There has been very little 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) 36011. [AN ITEM CONSTRUCTED OF ONE OR MORE LAYERS OF THIN FLEXIBLE MATERIAL, EITHER LAMINATED OR SEPARATED. IT IS DESIGNED TO FORM A TIGHT SEAL BETWEEN THE OPENINGS OF A PUMP AND TO TRANSMIT PRESSURE INDUCTED MOTION EITHER DIRECTLY OR THROUGH A MECHANICAL LINKAGE. THE ITEM MAY CONTAIN BOLT HOLES AND/OR A CENTER HOLE. EXCLUDES DIAPHRAGM, VALVE, SPECIAL SHAPED.].
This information was last updated on May 05, 2025.