National Stock Number
4140-01-550-6660
National Stock Number (NSN) 4140-01-550-6660, or NIIN 015506660, (cover,ventilatory) was assigned April 25, 2007 in the Federal Logistics Information System (FLIS). NIIN 015506660 was cancelled on April 2, 2012, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4130015506662. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated 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, with the most recent procurement date of Jan 26, 2011. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPM7LX10D9001. The total value of the awarded contracts has been US$ 25.52.
This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.
This NSN is assigned to Item Name Code (INC) 60350. []. 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 4140015506660 does not contain precious metals.
This information was last updated on Aug 01, 2025.