National Stock Number
5820-00-166-9412
National Stock Number (NSN) 5820-00-166-9412, or NIIN 001669412, (tuning unit,radio frequency) was assigned November 13, 1971 in the Federal Logistics Information System (FLIS). NIIN 001669412 was cancelled on April 29, 2010, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. 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, only one supplier is 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) 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 5820001669412 contains an unknown precious metal.
This information was last updated on Jul 01, 2025.