National Stock Number
6685-01-647-3491
National Stock Number (NSN) 6685-01-647-3491, or NIIN 016473491, (manometer assembly) was assigned August 19, 2015 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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, there are no suppliers that 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) 61990. [TWO OR MORE MANOMETERS MOUNTED ON A PANEL WITH CONNECTIONS TO A FILTER UNIT AND/OR PROTECTIVE SHELTER, THE PRINCIPAL PURPOSE OF WHICH IS TO MONITOR AIR PRESURE(S), PRESSURE DIFFERENTIAL AND FLOW RATE OF THE SYSTEM. IT MAY INCLUDE MOUNTING HARDWARE, INSTRUCTION PLATE, VALVES, AND FILTERS.]. 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 6685016473491 does not contain precious metals.
This NSN is associated to Schedule B 9026200000: instruments and apparatus for measuring or checking pressure. The Schedule B End Use is listed as measuring, testing, control instruments. NAICS classification category 334513: instruments and related products manufacturing for measuring, displaying, and controlling industrial process variables.
This information was last updated on Jul 01, 2025.