National Stock Number
6625-00-439-3544
National Stock Number (NSN) 6625-00-439-3544, or NIIN 004393544, (calibrator,frequency) was assigned February 11, 1972 in the Federal Logistics Information System (FLIS). NIIN 004393544 was cancelled on February 6, 2003, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 6625013465941. 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, there are no suppliers 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) 00860. [AN ITEM WHICH GENERATES A HIGHLY ACCURATE SIGNAL OF ONE OR MORE FIXED FREQUENCIES FOR CALIBRATION OF FREQUENCIES FROM OTHER SOURCES. DOES NOT INCLUDE OSCILLATOR (AS MODIFIED). FOR DEVICES WHICH ARE DESIGNED AS VOLTAGE SOURCES, SEE GENERATOR, SIGNAL. SEE ALSO FREQUENCY METER.]. 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 6625004393544 does not contain precious metals.
This information was last updated on Aug 01, 2025.