National Stock Number
5985-00-438-3257
National Stock Number (NSN) 5985-00-438-3257, or NIIN 004383257, (waveguide assembly) was assigned September 5, 1969 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. One 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 19, 2015, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 00305. [AN ITEM CONSISTING OF ONE OR MORE DEFINITE LENGTHS OF STRAIGHT OR FORMED, FLEXIBLE OR RIGID, PREFABRICATED HOLLOW TUBING OF CONDUCTIVE MATERIAL. THE TUBING HAS A PREDETERMINED CROSS SECTION AND IS DESIGNED TO GUIDE OR CONDUCT HIGH FREQUENCY ELECTROMAGNETIC ENERGY THROUGH ITS INTERIOR. ONE OR MORE ENDS ARE TERMINATED. MAY INCLUDE COMMON MOUNTING OF A SWITCH, WAVE GUIDE, A DUMMY LOAD, ELECTRICAL AND OTHER COMPONENTS SUCH AS WAVEGUIDE SECTION, CABLE TERMINAL CHAMBER AND THE LIKE. EXCLUDES:COUPLER,ROTARY,RADIO FREQUENCY; COUPLER, DIRECTIONAL; ADAPTER,WAVEGUIDE; AND TUNER, 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 5985004383257 does not contain precious metals.
This information was last updated on Aug 01, 2025.