National Stock Number
5340-00-735-6921
National Stock Number (NSN) 5340-00-735-6921, or NIIN 007356921, (plug,vent) was assigned January 1, 1961 in the Federal Logistics Information System (FLIS). NIIN 007356921 was cancelled on July 21, 2006, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN replaces 1 stock number, 6910002361996.
There are 4 manufacturer part numbers associated with this NSN. 3 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. 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 assigned to Item Name Code (INC) 28458. [A PORTED ITEM WITH OR WITHOUT EXTERNAL THREADS. THE PORT(S) MAY CONTAIN A FILTERING DISK OR WIRE FABRIC. IT IS DESIGNED TO BE INSERTED INTO AN OPENING IN A CYLINDER, PUMP, REGULATOR, VALVE, HOUSING, CASING, OR THE LIKE, TO PERMIT THE FREE FLOW OF FLUID FROM OR TO THE ATMOSPHERE. EXCLUDES BREATHER.]. 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 5340007356921 contains an unknown precious metal.
This information was last updated on Jul 01, 2025.