National Stock Number
6625-00-325-7521
National Stock Number (NSN) 6625-00-325-7521, or NIIN 003257521, (bolometer,radio frequency) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 3 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 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) 05654. [AN ITEM CONSISTING OF A RADIANT-ENERGY HEAT-TRANSDUCING ELEMENT SUCH AS A THERMISTOR, WHOSE RESISTANCE CHANGES WITH THE ABSORPTION OF RADIO FREQUENCY ENERGY, CONTAINED IN A CAVITY OR OTHER HOUSING. MAY INCLUDE TUNING ADJUSTMENTS, PICK-UP LOOPS, FLEXIBLE TRANSMISSION LINE, BATTERY CASE, AND THE LIKE. USUALLY USED WITH A SUMMATION BRIDGE TO MEASURE RADIO FREQUENCY POWER. FOR ITEMS CONSISTING OF A BOLOMETER HOUSED IN A PROBE, SEE PROBE, WAVEGUIDE.]. 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 6625003257521 contains an unknown precious metal.
This NSN is associated to Schedule B 9030908030: parts and accessories of articles of schedule b subheading 9030.39. The Schedule B End Use is listed as measuring, testing, control instruments. NAICS classification category 334515: instrument manufacturing for measuring and testing electricity and electrical signals.
This information was last updated on Aug 01, 2025.