National Stock Number
2805-00-625-2439
National Stock Number (NSN) 2805-00-625-2439, or NIIN 006252439, (insert,engine valve seat) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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 one supplier. 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 fairly common among different weapons systems, belonging to 12 different platforms.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 02, 2005, 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) 42140. [A METAL RING DESIGNED TO PROVIDE A SEATING SURFACE FOR A VALVE, POPPET, ENGINE IT IS MADE OF SPECIAL HIGH-GRADE ALLOY METAL THAT CAN WITHSTAND HIGH OPERATING TEMPERATURES. FOR FLUID VALVES, SEE SEAT, 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 2805006252439 does not contain precious metals.
This NSN is associated to Schedule B 8481909090: parts of taps, cocks, valves and similar appliances, nesoi. 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.