National Stock Number
4820-01-218-5056
National Stock Number (NSN) 4820-01-218-5056, or NIIN 012185056, (piston,valve) was assigned October 14, 1985 in the Federal Logistics Information System (FLIS). NIIN 012185056 was cancelled on August 2, 1999, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 36944. [A CYLINDRICAL ITEM OF VARIOUS CONFIGURATIONS WHICH RECIPROCATES IN A VALVE BODY, ASSISTING IN THE MOVEMENT OF THE DISK TO OPEN OR CLOSE A VALVE. MAY INCLUDE ADDITIONAL COMPONENTS SUCH AS RING(S), COLLAR(S), SPRING(S) AND THE LIKE. EXCLUDES DISK, VALVE.]. 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 4820012185056 does not contain precious metals.
This information was last updated on Jul 01, 2025.