National Stock Number
6625-00-451-3656
National Stock Number (NSN) 6625-00-451-3656, or NIIN 004513656, (plug-in unit,electrical-electron) was assigned May 21, 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 2 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, 3 suppliers are listed as Active suppliers 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jan 02, 2020, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 66495. [AN ELECTRONIC SUBASSEMBLY DESIGNED TO BE PLUGGED INTO ONE OR MORE BASIC PIECES OF TEST EQUIPMENT TO EXTEND THE CAPABILITIES OF THE BASIC INSTRUMENT. THE BASIC INSTRUMENT CANNOT FUNCTION WITHOUT ONE OR MORE PLUG-IN UNITS (AS REQUIRED) IN POSITION.]. 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 6625004513656 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.