National Stock Number
2040-01-123-7956
National Stock Number (NSN) 2040-01-123-7956, or NIIN 011237956, (buoyancy block) was assigned December 17, 1981 in the Federal Logistics Information System (FLIS). NIIN 011237956 was cancelled on March 2, 2014, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 2040994957744. 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, there are no suppliers 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 01, 2013. There have been 4 contracts issued for this part number, with 4 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE7M513M0635, SPM7MC13M2009, SPM7MC13M2009, SPM7M210V2672, SPM7M209M7628. The total value of the awarded contracts has been US$ 1,812.47.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jun 22, 2020, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 77777. 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 2040011237956 does not contain precious metals.
This information was last updated on Jul 01, 2025.