National Stock Number
2805-00-366-6412
National Stock Number (NSN) 2805-00-366-6412, or NIIN 003666412, (breather) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 2 stock numbers: 2805001729859, 2940003016445.
There are 8 manufacturer part numbers associated with this NSN. 5 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 10 suppliers. Today, 7 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 4 suppliers 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 assigned to Item Name Code (INC) 11034. [A MECHANICAL DEVICE DESIGNED TO PERMIT A FREE FLOW OF AIR INTO AND OUT OF AN ENCLOSURE, USUALLY USED ON ENGINE CRANKCASE, VEHICULAR DIFFERENTIALS AND TRANSMISSIONS, PUMPS, COMPRESSORS, AND THE LIKE. SEE ALSO CAP, VENT, FUEL STORAGE TANK. EXCLUDES VENTALATOR (AS MODIFIED).]. 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 2805003666412 contains an unknown precious metal.
This NSN is associated to Schedule B 8409918000: parts for spark-ignition internal combustion piston engines, nesoi. The Schedule B End Use is listed as industrial engines. NAICS classification category 333618: other engine equipment manufacturing.
This information was last updated on Aug 01, 2025.