National Stock Number (NSN) 2520-00-689-3402, or NIIN 006893402, (breather) was assigned February 8, 1971 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 4 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number is actively being procured by the US Government, with procurement history within the last 90 days. There have been 11 contracts issued for this part number, with 11 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 8 different suppliers. The last contract numbers awarded were: SPE7L325P4954, SPE7L321P2099, SPE7L319V9422, SPE7L018V8502, SPE7L317V9713. The total value of the awarded contracts has been US$ 7,762.17.
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. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jan 09, 2018, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. Acquisition of this part is restricted to source(s) specified on "Source Control", "Altered Item" or "Selected Item" drawings/documents. Valid AMCs: 1, 2, 3, 4 and 5.
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 information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 2520006893402 does not contain precious metals.
This NSN is associated to Schedule B 8483909500: parts, nesoi, of bearing housings & plain shaft bearings, housed bearings, clutches, universal joints, flywheels and transmission shafts. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 333613: mechanical power transmission equipment manufacturing.
This information was last updated on Jul 01, 2025.