National Stock Number (NSN) 5999-01-122-0520, or NIIN 011220520, (panel,radio frequency-electromag) was assigned November 13, 1981 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 6 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 8 suppliers. Today, 8 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over a year. There have been 15 contracts issued for this part number, with 15 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 4 different suppliers. The last contract numbers awarded were: SPE7M523P3052, SPE7M523V2601, SPE7M522V5260, SPE7M522V5260, SPE7M522V2238. The total value of the awarded contracts has been US$ 76,732.72.
This NSN is fairly common among different weapons systems, belonging to 14 different platforms.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 32626. [A REPLACEABLE DEVICE IN PANEL FORM DESIGNED TO ELIMINATE RADIO FREQUENCY AND ELECTROMAGNETIC INTERFERENCE FROM THE AIR PASSING THROUGH IT. THE ELIMINATION OF INTERFERENCE IS ACCOMPLISHED BY REFLECTION AND/OR ABSORPTION OF RADIATED ELECTROMAGNETIC ENERGY BY MEDIA CONSTRUCTED OF ELECTRICALLY CONDUCTIVE MATERIAL, IN HONEYCOMB OR LOUVERED FORM CONFINED IN A FRAME, WITH ELECTRICALLY CONDUCTIVE GASKETING (OR SELF-GASKETING FEATURE) TO PROVIDE ELECTRICAL CONTACT WITH THE CABINET ON WHICH IT IS INSTALLED OR MOUNTED. IT MAY BE USED IN AIR VENTILATING OR HEATING DUCTS, LIGHTING APERTURE AND THE LIKE. IT MAY HAVE A FILTER FOR DUST PROTECTION. IT MAY INCLUDE A DRIP-PROOF DESIGN FEATURE. EXCLUDES:ELECTRICAL FILTERING DEVICES WHICH EMPLOY CAPACITOR, RESISTOR AND COIL COMPONENTS TO ELIMINATE OR SUPPRESS CONDUCTED ELECTROMAGNETIC ENERGY. EXCLUDES:SHIELD,TEST.]. 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 5999011220520 does not contain precious metals.
This NSN is associated to Schedule B 8543909000: electrical machines and apparatus parts, nesoi. The Schedule B End Use is listed as electric apparatus. NAICS classification category 335999: all other miscellaneous electrical equipment and component manufacturing.
This information was last updated on Aug 01, 2025.