National Stock Number
5985-00-558-3999
National Stock Number (NSN) 5985-00-558-3999, or NIIN 005583999, (coupler,directional) was assigned November 11, 1974 in the Federal Logistics Information System (FLIS). NIIN 005583999 was cancelled on April 30, 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 are 2 manufacturer part numbers 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, only one supplier is deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 00384. [AN ITEM SPECIFICALLY DESIGNED TO BE INSERTED INTO A TRANSMISSION LINE, WAVEGUIDE OR COAXIAL TRANSMISSION LINE TO PROVIDE A SUITABLE TEST OUTLET. THE TEST SIGNAL IS ATTENUATED TO A PREDETERMINED VALUE.]. 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 5985005583999 contains an unknown precious metal.
This information was last updated on Jul 01, 2025.