National Stock Number
4320-01-137-4634
National Stock Number (NSN) 4320-01-137-4634, or NIIN 011374634, (liner and sleeve assembly) was assigned August 27, 1982 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.
There are 3 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number is actively being procured by the US Government, with procurement history within the last 90 days. There have been 42 contracts issued for this part number, with 41 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: SPE7M125V5141, SPE7M125V1431, SPE7M125V1239, SPE7M124F3111, SPE7M124F2037. The total value of the awarded contracts has been US$ 1,142,689.29.
This NSN is fairly common among different weapons systems, belonging to 23 different platforms.
There has been a moderate amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 315,614. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 02, 2006, 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 4320011374634 does not contain precious metals.
This information was last updated on Jul 01, 2025.