National Stock Number
4330-99-001-6243
National Stock Number (NSN) 4330-99-001-6243, or NIIN 990016243, (head,fluid filter) has an unknown assigned date. NIIN 990016243 was cancelled on August 2, 2015, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 4330171146302. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. 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.
This NSN is unique to one weapons system.
This NSN is assigned to Item Name Code (INC) 22570. [A COMPONENT OF A FLUID FILTER DESIGNED TO CONTAIN THE INLET AND/OR OUTLET PORTS OF THE FILTER. IT ACTS AS A COVER AND ATTACHES TO THE FLUID FILTER BODY OR MOUNTS DIRECTLY TO AN INTEGRAL CAVITY IN AN ENGINE, MANIFOLD, CASING, OR THE LIKE. THE ITEM MAY INCLUDE RELIEF, CHECK, BY-PASS VALVES, AND/OR FLUID FILTER ELEMENT(S). IT MAY HAVE MEANS FOR SUPPORTING THE FILTER ELEMENT(S), AND MEANS FOR MOUNTING THE FILTER. EXCLUDES:HEAD, SEDIMENT STRAINER AND COVER, FLUID FILTER.].
This information was last updated on Oct 31, 2025.