National Stock Number
5820-00-665-3622
National Stock Number (NSN) 5820-00-665-3622, or NIIN 006653622, (tuning unit,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. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 2 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 unique to one weapons system.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 26, 2008, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 00474. [AN ELECTRONIC DEVICE CONSISTING OF THE NECESSARY ELEMENTS TO ESTABLISH THE FREQUENCY OR FREQUENCY RANGE OF TWO OR MORE TUNED CIRCUITS TO PREDETERMINED VALUE OR RANGE. IT MAY HAVE FACILITIES FOR CALIBRATION ADJUSTMENTS. THERE ARE NO INTEGRAL FACILITIES FOR CONTINUOUS VARIATION OF THE FREQUENCY OVER THE ENTIRE RANGE OF THE ITEM. IT IS GENERALLY USED WITH AN EXTERNAL VARIABLE CAPACITOR OR INDUCTOR WHICH WILL EFFECT THE CONTINUOUS VARIATION OF THE FREQUENCY. THIS ITEM IS USED TO FACILITATE RAPID BAND OR CHANNEL CHANGES IN RADIO RECEIVERS, TRANSMITTERS, AMPLIFIERS OR SIMILAR DEVICES. IT DOES NOT INCLUDE ELECTRON TUBES. SEE ALSO COIL ASSEMBLY, RADIO FREQUENCY AND TUNER, RADIO FREQUENCY.]. 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 5820006653622 contains an unknown precious metal.
This NSN is associated to Schedule B 8529906000: parts for apparatus of headings 8525 to 8528, nesoi. The Schedule B End Use is listed as telecommunications equipment. NAICS classification category 334419: other electronic component manufacturing.
This information was last updated on Aug 01, 2025.