National Stock Number
5985-00-187-7691
National Stock Number (NSN) 5985-00-187-7691, or NIIN 001877691, (waveguide assembly) was assigned September 10, 1972 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 5 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 6 suppliers. Today, 5 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 5 years.
This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.
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) 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 5985001877691 contains silver.
This NSN is associated to Schedule B 8529109000: antenna & antenna reflectors of all kinds; parts suitable for use soley or principally w/ apparatus of heading 8525 to 8528, nesoi. The Schedule B End Use is listed as telecommunications equipment. NAICS classification category 334220: radio and television broadcasting and wireless communications equipment manufacturing.
This information was last updated on Jul 01, 2025.