National Stock Number
4820-00-853-6864
National Stock Number (NSN) 4820-00-853-6864, or NIIN 008536864, (valve,check) was assigned November 28, 1966 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 4 stock numbers: 4820010890100, 4820007201941, 4820010176440, 4820010285537.
There are 21 manufacturer part numbers associated with this NSN. 6 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 15 suppliers. Today, 13 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts. ISO Group has built a very strong supply chain for this NSN. We have direct relationships with 26 sources of supply.
This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 11 contracts issued for this part number, with 11 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 4 different suppliers. The last contract numbers awarded were: SPE7MC25P1952, SPE7MC21P2329, SPE7MC21P2329, SPE7MC21P1604, SPE7MC21P0461. The total value of the awarded contracts has been US$ 723,556.12.
This NSN is very common among different weapons systems, belonging to 35 different platforms.
There has been a moderate amount of demand for this national stock number. Globally, demand for this NSN has originated from 13 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 67,841. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jun 30, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) Acquisition of this part is controlled by QPL procedures. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 05487. [A VALVE PERMITTING FLOW IN ONE DIRECTION ONLY. IT DOES NOT HAVE A STEM, EXCEPT WHEN EQUIPPED WITH A LEVER AND WEIGHT AND HAS NO PRESSURE ADJUSTMENT. IT MAY BE INLINE OR CARTRIDGE (MANIFOLD) DESIGN.]. This item is a Flight Safety Critical Aircraft Part (FSCAP). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820008536864 contains an unknown precious metal.
This NSN is associated to Schedule B 8481302090: check valves of steel. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332911: industrial valve manufacturing.
This information was last updated on Aug 01, 2025.