National Stock Number
4820-01-267-5981
National Stock Number (NSN) 4820-01-267-5981, or NIIN 012675981, (cartridge,check valve) was assigned November 14, 1987 in the Federal Logistics Information System (FLIS). NIIN 012675981 was cancelled on December 2, 2015, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4820004196710. This NSN does not replace any other NSNs.
There are 4 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, 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 unique to one weapons system.
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 Apr 26, 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. The annual buy value of this part falls below the screening threshold of $10,000 but it has been screened for known source(s). (NOTE: This code shall not be used when screening parts entering the inventory. It shall not be assigned in preference to or supersede any other AMSC.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 50956. [A COMPLETE, INTERCHANGEABLE VALVE INCLUDING A REMOVABLE SEAT BUT EXCLUDING A BODY. IT IS DESIGNED TO PERMIT FLOW IN ONE DIRECTION. IT IS THE ENTIRE OPERATING PORTION OF A VALVE THAT MAY BE INSERTED INTO VARIOUS BODY STYLES. THE ITEM CANNOT OPERATE INDEPENDENTLY AND IS EASILY REPLACEABLE. EXCLUDES ITEMS FURNISHED WITH A BODY OR THOSE DESIGNED FOR MANIFOLD INSTALLATION.]. 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 4820012675981 does not contain precious metals.
This information was last updated on Aug 01, 2025.