National Stock Number
5310-01-617-1535
National Stock Number (NSN) 5310-01-617-1535, or NIIN 016171535, (washer,seal) was assigned March 13, 2013 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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 3 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.
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 12 contracts issued for this part number, with 12 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPEFA525P0266, SPEFA525P0266, SPEFA525V0068, SPE4A625V4326, SPE4A625V1906. The total value of the awarded contracts has been US$ 429.63.
This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has low volatility, with an estimated forecasted value of US$ 14. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jun 11, 2013, 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 is a commercial/non-developmental/off-the-shelf-item. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 37917. [A WASHER OF VARIOUS SHAPES HAVING A CENTRALLY LOCATED HOLE. IT IS PRIMARILY USED AS A SEAT FOR A BOLT OR SCREW TO DISTRIBUTE PRESSURE AND HAS A SEALING ELEMENT. IT MAY BE USED IN CONNECTION WITH METALLIC WASHERS TO WHICH IT CAN BE BONDED.]. 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 5310016171535 does not contain precious metals.
This information was last updated on Aug 01, 2025.